Within 1933, the McNeely Red Lake Holdings, Limited, would go under new direction in accordance with the Laws of Ontario, Canada. This newly organized company would become known as the McKenzie Red Lake Gold Mines, Limited. Much of the company direction was under W. G. Armstrong of North Bay,(president) J. W. Shaw of North Bay (Managing Director), G. W. Quin of Toronto, F. D Reid of Toronto, and H. M. Anderson of North Bay as Managing Directors. During 1933, the company owned a property consisting of 8 claims situated on the north section of McKenzie Island, which was 4 miles north of the Howey Gold Mine. The property at one point in time was formerly registered under the Martin McNeely Claims before actually becoming a mine site. At the time, this company was well off with constructing the needed mining camp, and a plant in preparation for underground exploration. Most the work was ahead of schedule when the plant was place into operation by August, 1, 1933, in which a three compartment shaft was commenced. Objectives at the time of starting this sinking was aimed sinking the newly developed shaft to a depth of 250 feet, which would allow two levels to be cut, and stationed. Work at the time was mainly confined to sinking after all the plant equipment was in place, and the camp was built.
By 1934, the newly developed three compartment shaft was sunk to a depth of 272 feet below the surface by the end of that year. A level at the time was also cut, and stationed on the mines 150-foot horizon that would be opened up by 98-feet of crosscutting, and 372-feet of drifting on the vein,. Another level at the time was also constructed on the 250-foot horizon, in which was opened up by 160 feet of crosscutting, and 416 feet of drifting. Drifting that was completed on the first level, had showed assays averaging 0.38 ounces of gold per tonne across 5 feet. Assays taken from the second level across 304 feet had also gave off 0.36 ounces across 5.4 feet. In addition to this, the distance between the dip of the vein was determined to have been 140 feet. As development progressed the company had also provided insight ore reserves of 37,819 tonnes, containing 13,992 ounces of gold. Most of the mine development work was also continued on the newly constructed 150- and 250-foot horizons. Development at the time had also provided better mineable ore lengths of 400 feet blocks that average 5.4 feet in width, and had also contributed another 150 feet of ore that measured 5.2 feet on the 150-foot level. The second level at 250-feet had also been noted as a continuous ore section for a length of 580 feet, with a 5-foot width. Ore within this section was stated to have contained ore of mine average, and also a short section of ore of 100 feet long, and 5.2 feet wide of lower grade ore.
Major changes at the time were taken from the company's Engineers as it was decided to continue to even greater depths with encouraging results. The purpose of doing this was to mainly figure of the proper mill installations, and an internal winze shaft was sunk on the vein from the 250-foot horizon. Winze sinking had rather continued past a depth of 350-feet, when a new level became constructed. A very minimal amount of lateral work that was completed had also given off good ore sections worth mining for. During the development of the newly constructed 350-foot level, a new vein was intersected in which branched off from the main shear, and striking to the west. Drifting was recommended for this portion as 165 feet was completed in ore of grade, and mining width.
The winze from the 250-foot level was also continued at greater extent which was now reaching a depth of 450-feet, vertically, and a new level was being opened up. Much of the results encountered in sinking were also highly satisfactory, with the exception of a few places where the vein had flattened of rolled.Further indications had provided good insights as there was a continuous mass of ore from 250-foot raise down to the 450-foot level. An average width on the vein from the newly constructed winze was 4.2 feet, and values were a lot more higher then the average mine. Some of the best results from exploring this mine was encountered below the 350-foot level of the McKenzie Island Red Lake Gold Mine.
As the mine started to progress, hydro electrical power was now being negotiated with the hydro electrical power commission of Ontario for supply of power. It was also at this point in time when a new transmission line of about 5 1/2 miles was hooked up. Most of the work in installing this power supply was nearly completed, and would transmit it to the company's plant. Many upgrades were also made towards this power plant as the equipment was change from steam driven to hydro electrical. A plan would also be made in regards for gaining the much needed supplies, machinery, and material for the new mill that was about to be built.
The construction of the mill was designed to be a steel head-frame with steel tanks and bins, in which was place on a concrete foundation. Most of this was only being advanced heavily as the company was nearly complete, and would included roofing, and sheeting of the steel head-frame. Capacity of the mill within this time period was mainly designed for producing 125 tonnes of ore on a daily basis. Other preparations were made towards effectively increasing productivity to about 200 tonnes of ore with low costs in effect. Preparations at the time were also being made in regards to having this mill fully functional by February, 1935. By the end of 1934, the electrical power line was completed, and the 125 tonne milling facility was also nearly completed. Total ore reserves which were calculated to the end of 1934, had stood at 97,900 tonnes, grading 0.437 ounces of gold (Au) per tonne.
Most of 1935, was mainly focus on development that was taking place on all four levels of the McKenzie Island Red Lake Mine Site. These new levels that became establish were cut and stationed at depths of 150, 250, 350, and 450-foot levels. Below shows a chart on how much development was completed on these levels in the operating year of 1935. Other preparations were also being made in regard to transportation that was completed by a barge from Hudson during the summer months. The company at this time had also adapted to plane services from Hudson or Sioux Lookout, which had landed passengers, freight, and mail to the mine. Most of the electrical power was also supplied to the mine over the company's very own power line, which taps the Hydro Line from Ear Falls to the Howey Gold Mine.
Installations to the mahcinery were also made when the 125-tonne cyanide mill was erected in the fall, and early winter seasons. Production was also on schedule when the mill commence operation on March, 1935, in which 36,117 tonnes was milled, and produced 15,113.456 ounces of gold (Au), and 2,772 ounces of silver (Ag) ($530,857.65).
Much of the mill ore that was provided as feed had also been obtained from 2 stopes on the 150-foot level, 10 on the 250-foot level, 7 on the 350-foot level and 7 on the 450-foot level. Mining of these stopes was also done by the using open stope methods, and owing to the flatness of the veins, in most cases dip from 020 to 045 degrees. Mucking was also employed towards the flattened veins as it was determined to have been very useful at the time. It was also in 1936, when the 036 degree winze was continued from the 450-foot level, and had reach a vertical depth of 500-feet, which was 757 feet on the slope. This also resulted in exploring two new levels that had become opened up on the mines 550- and 650-foot horizons of the McKenzie Island Red Lake Gold Mine.
It was at this point in time when two new frame dwellings and an oil house was built, and a second storey was added to the bunkhouse. Other installations were also made when a new Double Drum Manitoba Bridge hoist, gear driven from a 60 H.P, Motor, was place in operation on the 250-foot level. This also resulted in further installations when a type C.L-S.F Chlorination, made by Patterson Engineering Company was place in service.
Not much at the time had taken place on the 750-foot level but it had also shown 250-feet of ore in drifting on the downward extension of the newly discovered hanging wall vein on the 650-foot level. It was also on the 850-foot level when a new ore-shoot was discovered that had a length 65 feet long, and was situated 900 feet from the winze section. At the time this area of interest had become a favorable geological sections in obtaining more production sections of the mine. Much of the development by crosscutting, and drifting has indicated a length of 127 feet and 110 feet ore sections within the two hanging-wall structures.During this time period it was also choose to carry out diamond drilling, and underground work on the favorable geological sections of the hanging-walls. Diamond drilling on the 850-foot level had also shown interesting intersections within the diorite zone in the hanging wall, and extending north for the full length of present drifting. Other development projects were also focus on deepening the present internal winze shaft in regards to establishing four new levels at vertical intervals of 100 feet. Prior to this development, the new lowest, 1,250-foot level would had an inclined depth of 2,000 feet. One of these new levels at 950-feet was also reached by the end of the operating year in 1938. In opening these new levels it was also determined to mainly concentrate development on the mines 1,050, and 1,250-foot levels. Not a lot of work at the time was also done on the 950-foot level as a station was only cut. Production from the on-site mill had processed a total of 79,783 tonnes of ore, in which average 0.41 ounces of gold (Au) per tonne. In all processing the mill had treated a total of 32,711.03 ounces of gold (Au) from all the ore that was produced from hoisting. This also had accumulated to an additional 63,321 dry tonnes of ore that would produce 25,328.4 ounces of gold (Au). Diamond drilling that was done at the time had amounted to 557 feet from the surface, and 16,134 feet from underground. Ore reserves at present time had been curtailed due to development results being unsatisfactory, but ore had been maintain from previous years. Some of the new equipment that was added to the milling facility had given increased flexibility in capacity, and was aimed to increase production as development had indicated this.
Development that had taken place on the 550-foot level was mainly 200 feet in ore that was proven on the downward continuation of a highly productive hanging wall vein of the 450-foot level. This also resulted in further expanding the 650-foot level by 90 more feet that had become added on this level to the 180-foot section mentioned in 1938. It was on the 750-foot level when two different hanging wall structures, located north of the winze and in granodiorite, had provided 140 and 265 feet of ore lengths. Even further development work at the time was done on the 850-foot level, in which ore was proven for a length of 90 feet. Not a lot of development work was done on this level prior to sinking the 035 degree, inclined, internal winze shaft. At the time, it was also proven by opening up this level that the downward extension of the longer ore section did exist. During 1939, the Internal WInze shaft was further sunk in order to provide the much needed development on the 950, 1,050, 1,150, and 1,250-foot levels. With the development of the mine progressing, the McKenzie Red Lake Gold Mines, Limited had only carried out station cutting on the 1,050, and 1,250-foot levels. Planning at the time had determined it to be advisable to expand the drifts north, and south, in preparation for following favorable structures. Other plans at the time would also be aimed at prospecting by diamond drilling for any parallel structures from the current ones being mined. Further development had mainly encountered short ore-shoot from this stage of exploring this section further.
A large portion of the area at the time had also remained unexplored due to the sinking of the internal winze shaft, With the much needed completion it was found possible to expand exploration, ad development programs by 1940. Some of the newly interesting structures would also included the granodiorite hanging wall on the upper levels, which was previously considered as a poor host rock. However, further development on the 550- and 850-foot level had proved to be productive on these levels. This would also included the new structure above the 450-foot foot level that was discovered by development operations.
Production from the McKenzie Island Red Lake Gold Mine was known for hoisting 85,679 tonnes which was taken from ore broken in stopes, and stope development, as well as ore that was broken in development. Most of the processing at the time had also included 70,445 dry tonnes of ore with the yearly production. In total after processing the tonnage the mine would produce 60,133.32 ounces of gold (Au) in 1939. Diamond drilling at the time had resulted in 81 underground holes, totalling 18,020 feet in length.
An option agreement was also made by the Mckenzie Red Lake Gold Mines, Limited, and the McMarmac Gold Mines, Limited to explore new ground adjacent to the groups of claims. It was during that time period when a newly formed company was made under the McMarmac Red Lake Gold Mines, Limited. Work on the new property had started in June,in which an exploration shaft was sunk to 160 feet, and lateral development was carried out on two ore zones. Following these results it was decided to continue the shaft to 300 feet, in which similar work was underway. Most of the lateral development work completed on the 160- foot level disclosed three short ore-shoots that were high-grade. One of these short ore shoots was developed on the south zone, and two other ones were developed on the north zone. This had given a total length of ore shoots to be 238 feet, in which samples taken from this section resulted in 0.80 ounces of gold. From all of this development, there was also a total of 1,302 tonnes that was on the surface dump at the time. Another option at the time was done on the Sanshaw Claims, in which a considerable amount of diamond drilling was started in early spring.
Another Shaft known as the No. 1, was situated on K.R.L 1022, which was only sunk to a depth of 188 feet. Some lateral development also had taken place that resulted in 50 feet of drifting on the 80-foot level, and 300 feet of drifting, and crosscutting on the 175-foot level. No additional work at the time was done on this shaft as much of the development was carried on the No. 2 Shaft operation.
The No. 2 Shaft was rather developed under option agreements with the McMarmac Red Lake Gold Mines, Limited. Besides the No. 1 Shaft, the No. 2 Shaft was located on claim K.R.L 1023, which was sunk to a depth of 32 feet in 1937. Sinking was then carried out by the company under option in 1939, which was reaching a depth of 324 feet below the surface. Levels also had become establish at depth of 160, and 300-feet, in which lateral development took place. Development on this portion of the McMarmac Property had opened up these levels by a total of 1,096 feet of drifting, 335 feet of crosscutting, and 174 feet of raising on the 160-foto level. Power at the time was also taken from the Cochenour Willans Mine, and a plant was fully electrified at the time. Other installations included a 100 H.P motor that was installed in order to operate the compressor. This had also resulted in constructing a wooden water tank, with a capacity of 10,000 gallons.
Production during 1940, was also increased from that of previous years, as the milling facility had processed 93,913 tonnes of ore, and 76,572 tonnes of dry tonnage ore. A decrease was also made in the average mill recovery in which had stood at 0.3435 ounces of Gold (Au) per tonne. From all production the cyanide milling facility had produce a total of 58,561.5975 ounces of gold (Au) in 1940.
Development at the time was mainly focus on extracting as much ore as possible and to deepen the No. 1 Shaft from 850 feet to a vertical depth of 1,250 feet. Four new levels were also added toward this development that had become cut, and stationed on the 950, 1,050, 1,150, and 1,250 foot levels. It was also during this time period when much of the development was concentrated on the 1,050, and 1,250-foot levels. As sinking had progress this place delays on the development of the 850-foot level, in which would receive extra attention during the yearly review. With development taking place it was also known for providing new ore lengths on all levels, which totalled 2,728 feet, as compared with 1,045 feet in 1939. Important development on the McKenzie Island Red Lake Gold Mine was focus on the northeast section of the mine, that was 1,200 feet north of the main shaft, and east of the shear. It was also believed that strong structure was being developed on the 450- and 650-foot levels. Much of the work at the time was also further advanced on the 450-foot level to the north, for a length of 416 feet in ore that was developed. Some other areas of development were taking place on ore developed on the Hanging Wall Structures, that were located on 850, 1,050, and 1,250-foot levels. Other development during 1940, had also taken place on 950, and 1,050-foot levels, as it acted as a guide by results attained on the 1,050, and 1,250-foot levels. Some development in the new northeast section of the mine would also be continued on four levels from the 450- to the 1,050-foot level. Work at the time would also be able to permit the much needed diamond drilling, and exploration on the property that could not be accessed prior to this development. Ore reserves at the time had also increased when the 2,728 feet lengths of ore shoots were added. A lot of this newly intersected ore had also provided an exceeding ore production rate in maintaining the mines ore position.Diamond drilling at the time had resulted in 92 underground holes, totalling 34,019 feet in length.
It was also at this point in time when the McKenzie Management, along with the McMarmac Red Lake Gold Mines, Limited, had brought the McMarmac Property into production during 1940. Milling at the time was also being done at a rate of 75 tonnes daily in ore production that came from the property. The shaft was also deepened to a depth of 450-feet below the surface, and new level was establish at that horizon. From only opening this section up it was already indicating total ore lengths of 250 feet on the 450-foot level. Even further stoping on the upper levels had proven greater widths and much better continuity of ore than indicated in preliminary drifting. It was also during this time period when the company had acquired 5 additional claims from the Margaret Red Lake Gold Mine, Limited. A total of one fraction of the claims were also acquired from the Richmac Gold Mines, Limited. No work at the time was done on the No. 1 Shaft, as mining operations continued to develop the No. 2 Shaft further. Shaft sinking had also taken place as it was continued to further depths of 475 feet below the surface. Work was also aimed at establishing a third mining level that would be cut and station on the 450-foot horizon of the McMarmac Gold Property. By this time, the 160-foot level was already exceeding a total of 1,410 feet of drifting, 251 feet of crosscutting, and 273 feet of raising. New development at the time was also done on the 300-foot level that was expanded by 2,222 feet of drifting, 248 feet of crosscutting, and 165 feet of raising. Another level on the 450-foot horizon had also become expanded by 444 feet of drifting, and 423 feet of crosscutting.
Prior to this development, a 75-tonne cyanidation flotation mill was, built, and equipped in the later summer months. By October, 18, 1940, the on-site mill had went into production for the remainder of that year. Mining at the time had also resulted in hoisting 4,561 tonnes of ore that was mined, and milled. Construction at the time had also taken place in which an assay office, refinery, and mill-warehouse.
Much attention during 1941, was received on the favorable north-east section of the McKenzie Island Red Lake Gold Mine at the time. It was also during that year when an increase was made towards ore lengths in which now had totalled 3,683 feet, and 2,129 feet was developed in the northeast section on the 450, 650, and 850-foot levels. Much of the latter part of this ore length was noted that the level interval is 200 feet, and had added significance to this new ore footage.Some development of 1,554 feet had also included short ore shoots in hanging wall structures on the 950-, 1,050, and 1,250-foot levels. Much of the new north-east section of the mine had also offered an increase for developing a large area north on strike, as well as both hanging and footwall sections. A development drift on the 1,050-foot level to the northeast had also not reached the downward projection of the northeast ore zone.. Ore reserves within the McKenzie Island Red Lake Gold Mine had also improved from that of previous years by having mineable ore lengths of 3,683 feet.
Prior to development the milling capacity was also increased that was now maintaining a production rate of 230 tonnes per day. Most of the at this time was also treated with low grade ore which resulted in lower assay then that in previous years, Hoisting from the underground working had also provided 103,800 tonnes of mined ore, and 84,146 tonnes of dry tonnage ore. As mention above the mill recoveries were far less down as the ore which was processed had average 0.309 ounces of Gold (Au) per tonne. From all production the cyanide milling facility was able to process a total of 58,075.314 ounces of gold (Au).
In 1941, development at the time had also commence on the McMarmac Gold Property that wasn't located to far from the McKenzie Island Red Lake Mine. It was at this time when the No. 2 Shaft was deepened to 777 feet below the surface, and new levels were cut on the 600, and 750-foot levels. Development at the time was being completed on all five levels during the time period of operating. The reason why this mine was issued in this report is because of the team effort that was accomplish by the two companies, in which it also had adjoined the McKenzie Island Red Lake Mine. Lateral development would also continue on the 150-foot level when the total amount of drifting done was at 1,410 feet, in which crosscutting totalled 251 feet, and raising amounted to 273 feet. It was also at this time when the 300-foot level had a lateral development footage of 2,518 feet of drifting, 248 feet of crosscutting, and 271 feet of raising. Almost all of the development on the 300-foot level was mainly aimed a extending the underground workings below the company's No. 1 Margaret Shaft. From here a raise was than driven from to the bottom of the shaft in preparation for mining on the 80-foot level.Other development at this time was also confined to the 450-foot level when 870 feet of drifting, 423 feet of crosscutting, and 231 feet of raising was completed. With development taking place the 600 foot was also opened up by 82 feet of drifting, and 458 feet of crosscutting. The last level which was station on the 750 foot horizon was only opened up by 514 feet of crosscutting. Diamond drilling was also commenced which amounted to 7 holes, totalling 697 feet from the surface, and 49 underground holes, totalling 3,058 feet in length. Hoisting from the McMarmac Gold Property had amounted to 29,794 tonnes of ore that was milled at a daily rate of 81.6 tonnes per day. Contracts at the time were also made for further processing the concentrate that resulted in shipments to the smelter at Tacoma, Washington, for treatment.
More problems would rise in 1943, when there was a shortage of labour that had curtailed all development on the the McKenzie Island Red Lake Mine. Lateral drifting with the operating year amounted to 2,357 feet, which included 576 feet of work on the 1,250-foot level. Most of this was not aimed at following any structures but was advanced towards the northeast section. Much of the remaining footage had amounted to 1,781 feet, which was made up of drifting on structures mainly in the northeast on the 850- and 1,050-foot level. As development progressed this had also resulted in developing 981 feet of new ore in this section. There was also a new indications in the old portion of the mine that resulted in 120 feet of new ore that was indicated by drifting on the 750-foot level, making a total of 1,101 feet of new ore. More than half of the tonnage mill during 1943, was also taken from the Northeast Zone, and the grade of the ore equaled that of the ore being mined in older portions of the mine.Ore reserves at the time did not meet the requirements for that year, but previous years made it possible to keep this mine running through the war outbreak conditions. Diamond drilling at the time had also amounted to 118 underground holes, totalling 22,558 feet in length.
All the production that came from hoisting at the time was also known for amounting 103,449 tonnes of ore, and 85,973 dry tonnes of ore. It was also at this point in time when an electrical boiler, that was made by the Canadian General Electric Company, was installed to provide heat for domestic purposes. Much of the recovery of the mill ore per a tonnage was also down due to mixing low grade ore with high grade ore, in which resulted in 0.2877 ounces of gold (Au) per tonne. Gold recoveries from the mill processing at the time had resulted in 54,496.7094 ounces of gold (Au).
Most of the partnership agreements that were done with the McKenzie Red Lake Gold Mines, Limited were in effect to 195,000 in financing of the McMarmac Gold Property. It was by 1942, when McMarmac Red Lake Gold Mines had re-paid this loan in full. Development at the time was aimed at sinking the No. 1 Shaft to further depths of 300-feet, in which the shaft was situated 925 feet Southwest of the No. 2 Shaft. At the time it was also stated that no lateral work was completed on this portion of the mining project. Much of the mining operations at this time were continued through the No. 2 Shaft on only two levels that were stationed at 150- and 300-feet. Much of the development that was done on the 150-foot level consisted of more drifting in which it had a lateral development footage of 2,150 feet of drifting, 282 feet of crosscutting, and 638 feet of raising. As development continued the 300-foot level was only expanded by 206 feet of raising, in which the total lateral development footage was 2,518 feet of drifting, 248 feet of crosscutting, and 498 feet of raising. Diamond drilling was also carried onward that consisted of 15 surface holes, totalling 2,945 feet, and 92 holes totalling 6,715 feet from underground. Ore that was raised and milled at the time had also resulted in 32,073 tonnes that was process at a rate of 87.8 tonnes per day. All the concentrate that produce at the time was also shipped to Tacoma, Washington for further treatment..
Labour shortages had made a serious effect on the McKenzie Island Red Lake Mine as it had curtailed every phase of operation. During the year it was also reported that the company would mainly confine to further extractions of all ore possible in favorable conditions. It was also known for causing a down fall in production which the mill had not the same amount of ore in previous years. Drifting that was done in 1944, had amounted to 2,408 feet. of this 744 feet had also included 1,199 feet of drifting on the 1,250-foot level. This development at the time had also not followed any geological structures but was aimed at reaching productive ore zones, and for preparation of sinking. Drilling that was done on the productive geological structures had indicated 300 feet in the south end of the northeast zone on the 650-foot level.This also included 228 feet of ore in the northeast zone on the 1,250-foot level, and 380 feet of ore on the hanging wall structure in the south mine, making a total of 908 lineal feet of new ore. Almost half of the ore that was milled during 1944, was taken from the Northeast Zone of the McKenzie Island Red Lake Gold Mine. Each of the stoping widths had also rather average six feet in width at the time of operating this mine site. Ore reserves were rather again not maintained fully in which a total of 1 1/2 years was lost in mine life at the time. Other changes were also made when the McKenzie Red Lake Gold Mines had severed its connection with the McMarmac Red Lake Gold Mines, Limited. In total production that was hoisted it was reported that 93,588 tonnes was taken from the mine site, in which 78,279 was milled after waste discard. Diamond drilling at the time had also taken place in which consisted of 4 holes, totalling 2,272 feet, from surface, and 89 holes, totalling 16,360 feet from underground.
Ore that was hoisted from the McKenzie Island Red Lake Mine was only credited for processing 78,279 tonnes after discarding 15,309 tonnes. It was also at this point in time when the average recovery of the ore milled was also down to 0.2435 ounces of gold (Au) per tonne. The total recovery after processing the ore was known to have also produce 19,060.9365 ounces of gold (Au). Other construction was also taking place when a domestic supply pump house, and a new dock was constructed at the lake, and an addition was added to the Electrical Shop.
As the McKenzie Red Lake Gold Mines severed its contract, it was also at this point in time when the McMarmac Red Lake Gold Mines, Limited would shut down mining operations. Before the closure of the mine, and mill, it was also reported that development was mainly happening on the 150- and 300-foot levels. Lateral development on the 150-foot level had included 647 feet of drifting and 182 feet of raising, in which this level had now totalled 2,797 feet of drifting, 282 feet of crosscutting, and 820 feet of raising. Development would not stop here, as the 300-foot level had 267 feet of raising done, in which the total development footage was at 2,518 feet of drifting, 248 feet of crosscutting, and 765 feet of raising. The 450-foot level of the McMarmac Gold Mine Property had no development completed but the total development footage was 870 feet of drifting, 423 feet of crosscutting, and 406 feet of raising. Another level at 600-feet was also not developed, in which the total development footage was at 912 feet of drifting, 458 feet of crosscutting, and 451 feet of raising. The last level that was situated on the 750-foot horizon was also not developed but had a total lateral footage of 1,147 feet of drifting, and 984 feet of crosscutting. Even further diamond drilling was done that consisted of 12 surface holes, totalling 5,674 feet, and 59 holes, totalling 7,311 feet from underground. Additional exploratory work was also done as 3,800 feet of surface trenching was establish, and had only been 2 1/2 feet deep. Production during this time period of operating had resulted in 27,177 tonnes of ore that was produced, and milled at a daily capacity of 73 tonnes of ore. Prior to this down fall, the McMarmac Red Lake Gold Mines, Limited had stop mining, and milling operations on October, 1944.
Within the operating year of 1945, the McKenzie Red Lake Gold Mines, Ltd, had commenced the development of the new No. 4 Internal Winze Shaft. It was rather designed as a three compartment, vertical winze that had become collared on the 1,250-foot level. Most of this development had taken place at about 1,700 feet north, and slightly west of the collar No. 1 Shaft. As development proceeded the newly constructed winze that was collared on the 1,250-foot level had been sunk to a depth of 420 feet. Prior to this development, there were also new levels that had been cut, and stationed on the mines 1,350, 1,450, 1550, and 1,650-foot horizons. Much of the tonnage that was extracted from the McKenzie Island Red Lake Gold Mine was also much lower in grade, and did not achieve requirements due to shortage of labour. The shortage on labour was also crucial during the year then that within the past years of mining. Most of the major development at the time was focus on sinking the new internal No. 4 Winze Shaft operation that was collared on the 1,250-foot level, and had reach a depth of 1,650 feet. Almost all development was in plan of carrying out further extractions in order to achieve a steady flow of mill feed, and to gain a decent recovery.
Drifting at the time of 1945, had resulted in 2,553 feet, in which 1,091 feet was located in the northeast zone on the 1,250-foot level. Some drifting was also done on the 850-foot level, in which 1,101 feet was completed, and a total of 510 feet was located in the northeast zone, along with 681 feet that was done on the hanging wall of the older portion of this mine. Most of the drifting that was done on the 950- and 1,050-foot levels was mainly confined to the hanging wall portion of the older mine workings. New development approaches were also being used in which drifting along the ore-bearing structures indicated new lengths. A total of 452 feet was discovered i the northeast zone on a subsidiary structure, and 461 feet in the hanging wall zone. Other ore intersections were made on the 950-foot level that indicated ore lengths of 72 feet, and another on the 1,250-foot level, which indicated 310 feet in the Northeast Zone, and 120 feet in the hanging wall of the Northeast Zone. During this development it was also reported that 41% of all production was taken from the Northeast Zone, that had stoping widths of 6.2 feet. Ore reserves at this time had indicated 623 feet of new development ore in the Northeast Zone, and 792 feet in the older section of the mine, in which totalled 1,415 feet. The development footage had also improved the position of the mine life by far more than what was expected. Lateral development that was taking place had amounted to 2,553 feet of drifting, 443 feet of crosscutting, and 192 feet of raising. From all development completed to date this had given a total development footage of 56,982 feet of drifting, 11,953 feet of crosscutting, and 11,605 feet of raising. Diamond drilling that was done had consisted of 46 underground holes totalling a length of 7,120 feet.
Production at the time was rather down from that in previous years due to the curtailment of labour shortages in the mine. From all ore hoisted it was reported that the mine had achieved a production of 76,296 tonnes, grading 0.2016 ounces of gold (Au) per tonne. A total of 12,836 tonnes was discarded as waste, and total of 63,460 tonnes was milled during 1945. Total recoveries from the milled ore had produce a total of 12,793.536 ounces of gold (Au), and a minor amount of silver (Ag) in 1945. As labour continued to be an issue within the mining operation it was necessary for the company to confine it self to easy accessible ore of low grade.
It was in 1946, when development was concentrated on further obtaining a total of 489 feet of ore from the Southeast Zone, and 603 feet from the Northeast Zone. From all development that was completed in ore it became evident that a total of 1,092 feet was developed and extracted. During this time period of operating the McKenzie Island Red Lake Gold Mine it was also noted that a total of 6,250 feet of ore length remained. The need of ore to maintain the position of mining was shortly after evaluated as the project need 1,400 feet of new ore lengths per a year. Some issues were also on the rise due to the lenticular character of the ore-body, and its sporadic distribution within the shear zone that provided difficulty in calculating a tonnage. Most of this is also accompanied by the much needed stope development, and raises between levels in obtaining assays, and mineable widths. With these down falls taking place its necessary to come up with a strategical plan in maintaining the mines position which was still being productive at the time.
Even more issue continued to effect this project as the shortage of labour had abandoned original development plans as the focus was on easy accessible ore. The project at this time was also far behind on stope development, and vertical development within the McKenzie Island Red Lake Gold Mine. Most of this development was also delayed on favorable geological conditions between levels that ore had also existed. Each of these sections that were deemed profitable had yet to be tested by vertical development that was curtailed from the labour shortage. Most of the easily accessible ore at this time was near completion of being extracted, and this resulted in much lower grade ore due to insufficient development. Other plans at the time were aimed at increasing the development that would be done to 1000 feet per month in order to maintain ore grade material. In order to complete this task it would also depended on the much experience in labour at the time. Lateral development that was completed at the time had amounted to 2,942 feet of drifting, 1,170 feet of crosscutting, and 328 feet of raising. In total lateral development footage the mine had amounted to 59,924 feet of drifting, 13,123 feet of crosscutting, and 11,933 feet of raising. Diamond drilling at the time was also carried out which consisted of 59 underground holes, totalling 12,891 feet in length.
During this time period, the total amount of ore that was hoisted from the workings had end up totalling 79,660 tonnes, in which 10,459 tonnes was discarded as waste. From all this tonnage hoisted, it was reported that the onsite cyanide milling facility had processed 69,201 tonnes which graded 0.2421 ounces of gold (Au) per ton. In total gold recoveries the onsite milling facility had recovered 16,753.5621 ounces of gold (Au).
Within 1947, the Mine, and Milling facility had continued to operate through out this year. It was also at this point in time when drifting had amounted to 373 feet in the northeast zone, and 687 feet in the southeast zone. This also resulted in completing a total of 1,028 feet of raising in ore-bearing structures in the northeast zone, and 877 feet in the southeast zone. Labour had continued to be an issue in unstable and inadequate supply during the summer months, and early fall had slowed the progress. It was at this time period when development was increased by 51%, over 1946, and diamond drilling was increased by 149%. Additional progress at the time was made in getting the grade back to normal as development had take place on higher grade ore. Lateral development that was completed during that time period had resulted in 2,635 feet of drifting, 770 feet of crosscutting, and 1,589 feet of raising. Diamond drilling had also escalated as it would amounted to 286 underground holes, totalling 32,069 feet in length. No shaft sinking was done during this time period as most of the mining project was curtailed by a labour shortage.
Hoisting that was done from the No. 2 Shaft had also produce a total of 76,867 tonnes of ore. From this production a total of 9,319 tonnes was discarded as waste, and a total of 67,548 tonnes was milled at a recovery of 0.2933 ounces of gold (Au) per tonne. From all processing the on-site cyanide milling facility was able to recover a total of 19,811.8284 ounces of gold (Au). Ore at the time was also taken from a wide variety of locations, in order to maintain the grade at a normal scale within production. Most of the ore was broken down from stope sections, and development that had taken place on each productive area.
By 1948, diamond drilling had also intersected a large ore-body within the central area between the North, and South Mines at the 10th level. It was proven to be profitable once this newly discovered zone was tested for 300 feet along the dip. Diamond drilling in five holes had given off the following intersections that were obtained: $11.90 over 3.5 feet, $14.70 over 4.4 feet, $37.50 over 2.2 feet, $78.40 over 2.3 feet, and 84.00 over 4.1 feet. Much of the ore within this section had also been extended along strike for 300 feet with the following intersections of $4.20 over 2.8 feet, $37.10 over 3.0 feet, and $4.20 over 2.2 feet. Prior to this discovery, three machines were place towards this development, and it was hoped that one more machine could be added. Ore that was developed from this zone within the first three weeks of January, 1948, had average $11.50 for 846 tonnes. Other expectations at the time were also place that the ore-grade would be much higher. The newly discovered structure had also been traced to 90 feet above the 1,050-foot level of the McKenzie Island Red Lake Gold Mine. It was at this time when a considerable amount of raising was completed in ore to provide draw points. As this development was progressing it was also indicated that it would take two months before any development, or stoping could be done in order. The North Mine, which was above the 650-foot, had indicated considerable amount of ore by diamond drilling, and raising that was better in grade. Diamond drilling at the time had also indicated important extensions of the No. 10170 stope and also the No. 10135 stope, in which would be explored by raises. Ore at the present time of 1948, was also being drawn on all levels from the 450- to the 1,250-foot level. Stoping operations at the time were also started on the 1285 B Structure which obtained very encouraging results. This was rather a new development that was 700 feet in the hanging wall of the South Mine, in which ore positions had greatly improved in tonnage, and grade. Labour at the time was now running smooth but was still not up to the company's standard in supply. Progression was also made during that year as it would place major development and explorations towards the McKenzie Island Red Lake Gold Mine. Lateral development during that year, had amounted to 2,031 feet of drifting, 356 feet of crosscutting, and 4,393 feet of raising. In total development footage at the end of 1948, the mine had amounted to 64,590 feet of drifting, 14,249 feet of crosscutting, and 14,249 feet of raising. Even diamond drilling at the time became extensive when 306 underground holes, totalling 32,669 feet were completed.
Production at the time had amounted to 88,974 tonnes of ore that was hoisted from the workings. A total of 13,007 tonnes of this production was discarded as waste, and the mill had process 75,967 tonnes of ore. Grade recoveries that were achieved at the time had been well maintained by 0.2682 ounces of gold (Au) per tonne. In all processing and recoveries the on-site cyanide milling facility would recover a total of 20,374.3494 ounces of gold (Au) in 1948. No changes at the time were made towards sinking or upgrades on any of the mining facilities within this time period.
Changes in `1949, were now being made as the company was able to maintain its ore position in quality, and grade. Development was aimed at further exploring the 4130 stope section that was opened up and had showed better mining grades. Another stope known as the 611 stope had also been opened up which encountered bad ground that cause dilution that was difficult to control. Work at the time would also be required in order to explore the 12-60 stope area, and to access its value. Much of this area is also on the 12-85 B stope structure which would give an opening into this ground that has excellent possibilities but was difficult to explore by diamond drilling. Lateral development at the time had also continued when 1,104 feet of drifting, 1,152 feet of crosscutting, and 3,532 feet of raising was completed. This would once again change the development footage of the mine to 65,694 feet of drifting, 15,401 feet of crosscutting, and 23,139 feet of raising. Diamond drilling at the time had resulted in 241 underground holes, totalling 31,761 feet in length. No other changes were made towards the shaft at this time period as the mine was revamping it self from the curtailment of labour shortage.
Other changes were made toward the consistent improvement within the plant, and equipment at the time. Some changes were also made when a new classifier was set up in the mill and had proved to be very satisfactory. Other installations included a new 8 by 16- foot Oliver Filter at the present property and would be install right away. It was at this time when a very good compressor of 1,320 C.F.M capacity had also replace an old machine of similar capacity. Some more extensive testing was being done on a new brand of light rock drills made by Swedish Manufactures. Much of this machine had use steel with tungsten carbide insert for the single cutting edge in technology at the time. At present time the McKenzie Red Lake Gold Mines, Limited had three of these machine, and would increase to more if tests become positive.
Production from the mine at the time had resulted in hoisting 83,530 tonnes of ore, in which 9,810 was discarded as waste. It was also during 1949, when the recovery of grade in the ore had amounted 0.31 ounces of gold (Au) per tonne. With waste being discarded the milling facility would end up processing a total of 73,720 tonnes of ore, which the recovery of gold (Au) was at 22,853.2 ounces of gold (Au).
As mining operations continued throughout 1950, the McKenzie Island Red Lake Gold Mine was far more advanced then that in previous years. Lateral development at this time had also progressed when it had amounted to 4,275 feet in total. Most of this lateral development total had included 1,371 feet of drifting, 241 feet of crosscutting, ad 2,664 feet of raising. It was at this point in time when 53% of this development work was confined to extending the 1,250-foot level. Almost all development work on this level was continue on for exploration purposes of the 1,270 stope area. Progress at the time was also aimed at opening up the 10-167 and 10-177 stopes for further production. Diamond drilling had also acted as way in exploring the ground further that amounted to 26,222 feet in length, which was drop by 17.5% than that in previous year. It was also at this time when Curtailment was a factor that resulted in a sever shortage of labour during the summer months. Further exploratory work was being conducted on the Central, and North Sections of the mining operation. Ore positions at the time had also been very well maintained in quality, and grade during this time period. Much of the 1,270 stope are was very well developed for a strike length of 500-feet, and 200-feet along the dip on the 1,250-foot level. It was also stated that the north and south ends of this ore-body were open for further development. Exploratory work had also continued on the downward extension of the 10-135 stope, and the 10-170 stope areas on the 1,250-foot levels. It was also at this time when other extensions of known stopes were also in progress for further exploratory work. Lateral development at the time had consisted of 1,371 feet of drifting, 241 feet of crosscutting, and 2,663 feet of raising. This had also given a total development footage of 67,065 feet of drifting, 15,642 feet of crosscutting, and 25,802 feet of raising. Diamond drilling that was done had consisted of 6 surface holes, totalling 1,017 feet, and 162 underground holes, totalling 25,205 feet in length. Production and development at the time was also achieved by the use of 8 new swedish Jack Leg Machines. Each of these machines had proven to very effective in adapting towards the method of stoping. Other extensive tests were also being carried out with detachable tungsten carbide bits of various types. It was also hoped that this would lead to a reduction in costs of development, and more efficiency.
The McKenzie Red Lake Gold Mines, Limited had also place upgrades when the installations of the 1,320 foot capacity compressor, and 8-by 16-foot Oliver filter were completed. Other development work was also commenced on the sinking a new shaft by the end of 1950. With shaft sinking progressing the company would additionally start on crosscutting methods in order to prepare the new station levels for development. Most of the start of this work was also delayed due to a serious down fall in labour shortage that effected this development project. Plans at the time were also made towards keeping two crews at work continuously on the No. 5 Shaft Operation.
Production at the time was also effected slightly, when 88,949 tonnes of ore was hoisted, in which 9,272 tonnes was discarded as waste. Milling at the time had now process a total of 79,677 tonnes of ore that graded 0.3042 ounces of gold (Au) per tonne. Recoveries from this tonnage had also provided a recovery of 24,237.7434 ounces of gold from all process ore in 1950.
By 1951, the McKenzie Island Red Lake Mine had now become a productive mining operation with 3 shaft operations and fourth one being developed. The No. 1 Shaft was the main production shaft that had been made into three compartments, , and had reach a depth of 456 feet vertically. Another Shaft known as the No. 2 Internal WInze Shaft had also been designed as a three compartment shaft, and reach an incline depth of 1,704 feet below the 250-foot level. This was also followed by the No. 4 Vertical Internal Winze Shaft that was made into three compartments, and had reach a depth of 430 feet below the 1,250-foot level.
The total lateral development footage for 1951, was 4,797 feet, in which consisted of 2,168 feet of drifting, 296 feet of crosscutting, and 2,333 feet of raising. It had also represented an increase in development from previous years by a total of 12% during 1951. Most of the development at the time was done on the 1,250-foot level of the No 2 Internal Winze Shaft Operation which amounted to 61%. A percentage of 31% of development work was also done on the 1,050-foot level of the No 2 Internal WInze Shaft at the time. Development on the 1,250-foot level, was mainly confined to the 1270 stope area, and towards the downward extensions of the 10-135, and 10-170 stope areas. Diamond drilling at the time had amounted to 21,880 feet in total length, which was a decrease of 16.5% over the previous year of operating. Most of the decrease at this time was mainly cause due to a shortage in labour that had effected this mine for several years. However, expansions would not stop as a new heading was started in order to explore the downward extension of the 899 stope structure.Prior to this development, it would also open up considerable amount of new ground that would take a few months before the value of the ore could be assessed.
Other development work was also focus on developing the No. 5 Shaft operation during 1951. It was rather at this point in time hen 582 feet of crosscutting, and 1,452 feet of raising was done. Major development had also contributed to this as a pilot raise was broken through to the surface, which completed this stage from the 1,250-foot level. At present time the No. 4 Shaft that was collared from the 1,250-foot level to the 1,650-foot level was being dewatered due to inactivity. Some other plans at the time were made upon completion of dewatering the shaft as a pilot raise would be started from the 1,650-foot level to the 1,250-foot level. As development progressed this had also increased the sizable extensions of the 10-115, which was an excellent prospect for tonnage from the 12-180 stope are. Exploratory work along with development had continued to indicate good values, and grade in ore within the mine project. The total lateral development footage for the end of 1951, was 69,233 feet of drifting, 16,520 feet of crosscutting, and 29,587 feet of raising. It would also included diamond drilling that consisted of 181 underground holes, totalling 21,880 feet in length, Even more changes were made when a switch over was made from conventional rock drills, and steel bits to light machines, and tungsten carbide bits. A total of 70% of all drilling at the time was also being achieved by the use of tungsten carbide tipped bits, and rods.
A slight decrease in mint price for gold of $1.04 per ounce over the year of 1950, had effected the average per tonne and mine profit. Prior to this, an increase was made in production when a total of 90,918 tonnes was hoisted from the mine workings, and a total of 10,090 was discarded as waste. Milling during the year had processed a total of 80,828 tonnes of ore that had averaged 0.2936 ounces of gold (Au) per tonne. This had provided the company with a mill recovery of 23,731.1008 ounces of gold (Au).
It was during 1952, when a further 353 feet was driven towards the development of the pilot raise, between the 1,650- and 1,250-foot level. As development progressed the pilot raise from the 1,650-foot level to the 1,250-foot level was also almost completed. Most of the work would also be concentrated on the section between the 1,650- and 1,250-foot levels during the winter months while labour was plentiful. With development progressing it was found that this section of the shaft would be difficult as approximately 5,000 tonnes of waste rock would be hoisted. Hoisting within that time period of operating would also be done through three shafts, with immediate tramming and disposed on surface.
Development of the new shaft program was also well advanced during the operating year of 1952. Lateral development in connection with this program had amounted to 121 feet of drifting,109 feet of crosscutting, and 353 feet of raising. Most of the development of this shaft was continued from underground as it would be slashed to its full size from the 450-foot level to the surface . As development continued there would be a considerable amount of rock work done in preparation for the construction of head-frame, crusher, and conveyor way. Much of this development program had also involved the hoisting to surface, and disposing of 9,986 tonnes of waste. It was also at this time when most of the major development work was focus on the new No. 5 Shaft Operation. A total of 6,186 feet was done in total lateral work at the time of progressing with the development stage. Of this development, a total of 3,443 feet was done on the 1,050-foot level, in which was aimed at exploring the 10-127, and 10-47 stope sections. Some development was also confined to the 550-foot level on the No. 558 stope area. Another portion of development during the year was also confined to the 650-foot level, and was focus on explorations of the No.6164 stope area. Lateral work that was done during 1952, had amounted to 3,005 feet of drifting, 418 feet of crosscutting, and 2,763 feet of raising. Diamond drilling at the time of operating this project had consisted of 215 holes, totalling 29,586 feet from underground.
It was at this time when promising diamond drilling results were encountered from exploratory work in 1952. In accordance with the No. 10-127 stope area, it was proven to have been disappointing in regards to exploration and development, Much of the values within this section had become erratic, which resulted in a good deal of low grade ore. The failure of this area to respond satisfactory had much to do with the exceptional poor grade through the year. Better results at the time were also being obtained in other parts of the mine which made an immediate improvement in grade. However, expectations were also made on the tonnage that could be maintained throughout the year of operating.
Production that came from the mine had amounted to 94,731 tonnes of ore that had become hoisted from the workings. A total of 11,443 tonnes was also discarded as waste, in which the milling facility would only process 83,228 tonnes of ore. Much of the ore that was being processed at the time had also average a recovery of 0.2592 ounces of gold (Au) per tonne of ore mined. In total recoveries the mining operation was known for producing 21,572.6976 ounces of gold (Au) in 1952.
A major down fall at the time had occurred at 12 noon,and 1 pm on January, 24, 1953. It was at this point in time when a fire had occurred on the second floor of the bunkhouse, in the northeast corner of the corner room. The fire at the time was believed to have been caused from a cigarette butt while the occupant was out for dinner. An alarm at the time was sound at 1 P.M, and the fire crew already had a hoes connected and in operation in approximately 10 minutes. By this time, the smoke in the bunkhouse was way to thick in order for the fire crew to enter, and water had become projected through the windows to distinguish the fire. Much of the bunkhouse at the time was also situated at a distance of 120 feet south of the hoisting room and shaft house.
Work at the time was continued on the new inclined No. 5 Shaft by driving the pilot raise to the surface and slashing the shaft to full size. It was by the end of 1953, when the No. 5 Shaft was completely slashed to full size from the surface to the 1,650-foot level. New stations at the time were also cut on the mines 450- and 650-foot levels of the new No. 5 Inclined Shaft. The underground crusher room and connected tunnels were also excavated with the foundation poured. Further construction at this point in time had also followed through with the completion of the hoist room, in which the hoist was 90% installed with only electrical wiring to be completed. Other predictions at the time were made towards having this newly developed shaft in operation by fall of that year. Once the shaft becomes completed the company would place mandatory development towards new levels where the downward extensions of known ore structures had existed.
Development at the time was further advanced as the total lateral footage for 1953, had amounted to 5,612 feet. A total of 2,721 feet of this development was drifting, and subdrifting, 590 feet of crosscutting, and 2,301 feet of raising. It was at this point in time when 844 feet of this drifting was done on a new structure. and the remaining 69% was in stope development. About 1,756 feet of raising was also done in ore, and the remainder was achieved for draw points. Diamond drilling at the time had disclosed an ore structure between the 1,250- and 1,050-foot levels of the 12-15 area stope. This newly disclosed ore was at about 200 feet in the footwall of the main structure within the mining operation. Further drilling on this structure had traced it with promising results for a stope length of 470 feet. A total of 250 feet of drifting on the 1,250-foot level and 350 feet of drifting on the 1,050-foot level was done by the end of 1953. Exploratory work at the time had also disclosed the northern limit of this structure, but it had still remained open tp development upward, downward, and to the south. This resulted in indications of a large tonnage that could be mined from this section of the McKenzie Island Red Lake Gold Mine. Some more diamond drilling, and development was also continued in efforts to explore this structure further for stoping. Other plans at the time were also in effect at checking extensions of old stopes within the mining operation. The program at the time had resulted in finding of No, 551 stope during 1953, and was in midst of old workings that gave the company 6,033 tonnes grading $13.95. Diamond drilling that was done had consisted of 3 surface holes, totalling 3,246 feet, and 208 underground holes, totalling 33,182 feet in length. Surface drilling at the time was mainly done in order to explore the ground in the hanging wall of the present structures,
It was at this point in time when surface construction had continued, and the crusher building, which had house the secondary crusher and screens was completed, and connected to the mill building by a conveyor way. Much of the machinery at the time was also ready to be installed within these buildings when the time for change over arrives. These changes had also included over hinges on the speed of which the shaft construction proceeds, but the time element involved is difficult to estimate until the work begins. Other construction plans at the time were also aimed at building a deck house at the shaft collar.
The McKenzie Island Red Lake Mine was also achieving steady production rates when a total of 84,352 tonnes was hoisted from the workings by three shafts. A total of 9,282 tonnes was also discarded as waste from this production obtained, which the mill would process 75,070 tonnes of ore. Grades of the ore at the time were also increased from that of 1952, in which recoveries were at 0.2894 ounces of gold (Au) per tonne. In total gold recoveries within the operating year of 1953, the mine, and mill had produce 21,725,258 ounces of gold (Au).
Lateral development during 1954, had amounted to 5,971 feet in total, in which 2,496 feet was drifting, and subdriftig, 1,100 feet was crosscutitng, and 2,365 feet was raising. At the time, there was a new structure or series of structures that were being developed on the southern part of the mining operations. Diamond drilling that was done on the hanging wall of the 650-foot level had intersected a vein about 500 feet out. Drilling that was done subsequently to trace this vein had also indicated good grade, and a crosscut was driven to examine it. Prior to developing this section a drift was driven for a length of 250 feet on the south limit of the vein. It was also determined that the newly discovered vein was still opened to the north. Diamond drilling was also done on the 550, 750, 850, and 1,050-foot levels in the same are that had shown the structure to persist. This new indications had given off a considerable amount of development that could now be done above the 1,250-foot level. It had also included indications of ore on the new levels that were possible to access by the newly developed No. 5 Shaft operation. Diamond drilling during the year had consisted of 3 holes, totalling 2,874 feet from the surface, and 304 underground holes, totalling 47,199 feet in length.
Major construction at the time was mainly aimed at completing the No. 5 Shaft, and constructing the shaft further by the end of 1954. As the new shaft had become completed, and in service it was not possible to handle the ore through this, and the new crushing plant until a connecting ore-pass system was to be completed. It was at this point in time when the shaft, and associated buildings, and machinery were credit to a small mine, and will be a great benefit in years to come.
Production from the main shaft had amounted to hoisting a total of 85,208 tonnes of ore from underground. A total of 11,352 tonnes was also discarded as waste, in which the cyanide milling facility had processed 73,856 tonnes of ore. Grade recoveries of the ore had also decreased slightly once again, as the mill feed had average 0.2373 ounces of gold (Au) per tonne. This had also resulted in a total recovery of 17,526,0288 ounces of gold (Au) from the McKenzie Island Red Lake Mine in 1954.
The McKenzie Red Lake Gold Mines, Limited had rather went changes as the production shaft was now the No. 5 Shaft operation. Most of this work at the time was also completed by the beginning of 1955, but the driving if a connection ore-and-waste system, the installation of a pumping system, and electrical wiring in the crushing plant took place. Some of the hanging wall structures in the southern part of this mine had also shown very good grade in ore. It was during the year when over 18,000 tonnes of 0.365 ounces of gold ore was taken from the 620-720 structure. At present times, another structure, of approximately 50 feet in the hanging wall is was being developed. Development to date indicates that the ore is above average grade in this section of the mining operation. Diamond drilling at this point in time had also intersected other structures within this section of the mine, and had required further work.
Another structure at the time was also located 600 feet in the footwall of the main shear at the 1,050-foot horizon. Mining at the year end had also produced 5,000 tonnes of ore averaging 0.312 ounces of gold (Au) ore per tonne in this section. A large tonnage was also indicated, and diamond drilling had followed the structure above the 950-foot level. The addition of these new hanging wall and footwall structures had broadened the scope of exploration in the upper levels of the south part of this mine.
Some of the development on the new levels that were opened up in the No. 5 Shaft had been confined to date to the 1,450-foot level. This resulted in a drive to the north that was roughly parallel to the structure of the level above, in which exploratory work was underway. There was also a drive to the south that had been commenced, in which was achieved in intersecting the shortest possible route of known structures, Some drilling stations were also left in parts of this drive as they were aimed at exploring the central section of this mine. Diamond drilling at the time had resulted in 235 holes, totalling 47,389 feet in length from underground, and 11 surface holes, totalling 3,691 feet. Much of the surface drilling at the time was aimed at checking a hanging wall structure.
Production during 1955, had resulted in taking out 87,850 tonnes of ore that had become hoisted from the mine. It was also at this time when 11,405 tonnes was discarded as waste, and the remaining 76,445 tonnes was milled. Ore recoveries within the processing at the time had given an average grade of 0.2645 ounces of gold (Au) per tonne. From all production the mill was able to recover a total of 20,219.7025 ounces of gold (Au) within 1955.
During 1956, the No. 1 Shaft was completely abandoned as all work was now being done from the No. 5 Shaft operation that was reaching a depth of 1,600-feet. No much at the time had occurred as new plant equipment was installed that included a compressor, and a heating boiler. A total of 80,420 tonnes of ore was also hoisted from the McKenzie Island Red Lake Gold Mine during 1956. It was also at this point in time when the average tonne milled had resulted in a recovery of 0.2313 ounces of gold (Au) per tonne of ore mined. In total recoveries the on-site milling facility would end up recovering 17,342 ounces of gold (Au) from 74,948 tonnes milled. This had also included 11,959 ounces of silver that was produced in association with the gold . Lateral development at the time was completed on 450-, 550, 650, 850, 1,050, 1,250, 1,450, and 1,600-foot levels. Diamond drilling that was done had consisted of 160 holes, totalling 30,859 feet from underground.
Exploration and development had taken place on the No. 2 Shear Structure, and had resulted in disappointment in 1957. It was also during this time when the shear was tested by diamond drilling on the 800, 1,250, and 1,600-foot levels. In every drill hole the intersection of the shear was strong, but the values were to low for present mining. Drifting that was done to the east along this shear on the 1,600-foot level had opened up a strong quartz vein in the foot-wall of the basic dike. This vein-dike structure was identical to the No. 1 Shear in the "North Mine", but values were once again to low. It was early in December, when it was decided that all development be stopped, and that the mine was to be place on a salvage basis.
The North Mine on the 1,450-foot level had also started to shape up in new extension to present stopes. It was also determined that the average grade of the ore was slightly lower than that between the 450- and 1,250-foot levels. Stoping on this section had later indicated that this level would be as productive as any of the upper levels in he North Mine. Other expectations at the time had expected that this structure would continue to the 1,600-foot level. To date, the North Mine between the 450- and 1,250-foot level had produce 515,000 tonnes, grading 0.25 ounces of gold (Au) per tonne, in which resulted in 128,750 ounces of gold in total. There was some difficulty involved as it was never possible to calculate the ore-reserves due to the type of ore occurrence. At the time it was also possible that the McKenzie Island Red Lake Gold Mine could operate for one or two more years on salvage basis. Diamond drilling during this time period had amounted to 66 underground holes, totalling 13,436 feet in length.
The amount of ore that was hoisted from the No. 5 Shaft operation had amounted to 86,556 tonnes, in which the mill had treated 78,375 tonnes as the remainder was discarded as waste. The production since milling started on March, 1935, to December, 31, 1957, had resulted in a bullion recovery of $18,015,413.63. Most of this production of gold recovery was taken from a total of 1,663,247 tonnes that was milled. Gold recoveries from all milling had average 0.24 ounces of gold (Au) per tonne, which the mine produced 399,179.28 ounces of gold (Au) from the start up of mining.
Other major exploratory work was also continued at the time which diamond drilling from the bottom levels had indicated that the shear continues at depth. Most of this confirmation was notice in the North, and South Mine workings as drilling had taken place. The shear, and it associated hanging wall and foot-wall veins, have produced 2,116,989 tonnes of ore to date. Development, along with explorations below the 1,450-foot level in the south mine had indicated the existence of two year's supply of ore in this area. The results of the program of development was directed towards the 1,600-foot level of the South Mine which would determined the outcome of the shaft sinking proposal.
Much of the mining operation during the year had supplied the mill from 35 development headings and 58 stope sections. The main course of the ore was taken from the South Mine, in which broken ore from stopes amounted to 76,645 tonnes, and broken ore from development amounted to 12,947 tonnes, for a total of 89,592 tonnes. After sorting and discarding as waste, the milling facility would process a total of 79,133 tonnes of ore. Development at the time had also totalled 5,747 feet, compared to 1,817 feet in 1958. The major effort at the time was directed towards development in opening the 1,450-foot level in the South Mine. As this progressed, the work had shortly produce 648 linear feet of new ore averaging 0.350 ounces of gold (Au) per tonnes across an average width of 3.7 feet. It was at the years end when a total of 1,000 feet of potential ground had remained to be explored within the McKenzie Island Red Lake Gold Mine. During the operating year of 1959, a total of 87,116 tonnes of ore was hoisted, in which 79,133 tonnes was milled as the rest had become discarded as waste. From this process the 79,133 tonnes that was milled had recovered 17,572.303 ounces of gold (Au), and 4,927 ounces of silver(Ag), Lateral development during 1959, had amounted to 3,389 feet of drifting, 368 feet of crosscutting, and 1,990 feet of raising. This had given the mine a total development footage of 91,089 feet of drifting, 25,829 feet of crosscutting, and 48,976 feet of raising. Diamond drilling that was done had amounted to 107 underground holes, totalling 12,911 feet in length. Construction at the time had also taken place when a new bunkhouse was fully developed. It was during this time period when a Vacuum Pump was equipped with a 30-horsepower, 550 volt, Lancashire Electric Motor.
It was in 1960, when diamond drilling in the South Mine, from the 1,450-foot level had partially outlined one of the largest hanging wall structures ever found in the McKenzie. At present time this structure was 700 feet long and has still been opened to the south of the mine workings. Values from drilling were low, but drifting along the structure has shown that the ore occurs in narrow shoots with values remarkably persistent up dip. At the years end, drifting had advanced 340 feet along the structure, and 245 feet was in ore that average 0.381 ounces of gold (Au) per tonne across an average width of 3.05 feet. Lateral development that was done in 1960 had consisted of 1,826 feet of drifting, 2,249 feet of crosscutting, and 3,477 feet of raising. This had given a total development footage of 92,915 feet of drifting, 28,078 feet of crosscutting, and 52,453 feet of raises. Diamond drilling at the time had amounted to 82 underground holes, totalling 9,433 feet in length. Equipment at the time was also added that included a new ventilation fan house, and additions to the engineering office. A ventilation fan, and two slushers were also added. During 1960, the on site milling facility had operated at a daily capacity of 235 tonnes of ore per day, in which the mill had processed 83,194 tonnes of ore, which recovered 17,830 ounces of gold (Au) and 4,370 ounces of silver (Ag).
Exploratory drilling that was done on the deepest level of the North Mine had shown that the vein-dike structure continues strongly with depth in 1961. Cut grade for the first 185 feet of slope length below the 1,600-foot level was 0.540 ounces of gold (Au) across an average width of 4.3 feet. Exploratory work and development work was directed towards opening up the North Mine where the main shear structure is closed to the 1,800-foot station, and about 300 feet from the 1,950-foot station. It was also at this time when a long drive to the South Mine would be deferred until development results in the North Mine had been determined. Development results on the 1,800, and 1,950-foot levels would determine the future of the McKenzie Island Red Lake Gold Mine. On each of the new levels there was a mininum potential length of 1,200 feet along the North Mine Structure to be developed. In addition to this, there was also 600 feet along it slope length. It was at this time when there was only 1 year ore supply that remained above the 1,600-foot level at current mining conditions, and gold market prices. It was also at this point in time when the No. 5 Shaft was sunk to greater depths as it was now reaching 1,817 feet below the collar. The 1,800 foot level was also establish, and development consisted of 1,878 feet of drifting, and 3,687 feet of raising. The total development footage for the end of 1961, was 94,793 feet of drifting, 28,078 feet of crosscutting, and 56,140 feet of raising. Diamond drilling had amounted to 103 underground holes, totalling 10,149 feet during that year.
Mill during 1961, was being achieved at a daily production rate of 235 tonnes per day, in which the mill processed 83,587 tonnes of ore. From this processing the milling facility was able to recover 21,066 ounces of gold (Au), and 6,968 ounces of silver (Ag).
By 1963, the West Mine Shear was being explored by drilling along a strike of 2,200 feet, and a dip length of 900 feet. Results from this drilling phase were disappointing, and no further work was planned. The North Mine vein dike structure was located by drilling from the new 2,200-foot level. Two flat drillholes had traced this vein for 400 feet along strike, which the values were low but the vein appeared to be strong. A total of 75% of ore mine, and 80% of the gold came from the 1,800-, and 1,950-foot levels in the North Mine. The average grade of this ore after sorting was also reported to have assayed 0.311 ounces of gold (Au) per tonne of ore mined. Prior to this, the remaining 25% that was mined had been taken from above the 1,600-foot level, and the grade was 0.248 ounces per tonne of ore after sorting. The clean up of this section of the is expected to be completed by the operating year of 1964. Ore at the time had remained above the 1,950-foot level, and results from drilling from the 2,400-foot level in the North Mine indicated two years of ore. It was also during this time period when the No. 5 Shaft was sunk to a depth of 2,374 feet below the surface. New levels within that time period were soon establish on the 2,100, 2,250, and 2,400-foot horizons of the McKenzie Island Red Lake Gold Mine. Development work at the time had amounted to 2,016 feet of drifting, 2,530 feet of crosscutting, and 3,452 feet of raising. This had given the mine a total development footage of 98,377 feet of drifting, 31,575 feet of crosscutting, and 63,712 feet of raising. Diamond drilling within 1963, had resulted in 108 underground holes, totalling 10,742 feet in length.
A primary ball mill was also added to the grinding circuit in August, 1963, and the tonnage milled in the last five months of the year average 275 tonnes per day. It was also at this point in time when the milling facility had processed 89,616 tonnes of ore with an average grade of 0.289 ounces of gold (Au) per tonne. The total recovery from this processing had amounted to 25,899.024 ounces of gold (Au) by the end of 1963.
Shaft sinking at the time had continued onward in 1964, as the main No. 5 Shaft was now reaching a depth of 2,480 feet below the surface. Development work at the time had consisted of 2,496 feet of drifting, 1,050 fet of crosscutting, and 4,452 feet of raising. It was also at this point in time when disappointing results escalated from development on the South Mine at the 1,950-foot level, and deterioration of ore grade in the North Mine bottom level had left the mine's ore position critical. Ore in sight will provide sufficient mill feed for capacity operations in the second half of 1965. During 1964, mining was dependent for ore on remnants left in the upper sections of the workings. Many of these sections contained large portion of sub-ore material within them. The condition had also improved late in the year as new source were prepared on the new levels. At this point in time the McKenzie Island Red Lake Gold Mine had produce 99,493 tonnes of ore, in which 7,283 tonne was sorted as waste. From 91,867 tonnes milled, the mill had produce 15,972.47 ounces of fine gold, and 3,101.36 ounces of fine silver. The total development footage to the end of 1964, had resulted in 100,873 feet of drifting, 32,625 feet of crosscutting, and 68,164 feet of raising. Diamond drilling 1964, had consisted of 127 underground holes, totalling 14,019 feet in length.
Development work that was done in 1965, had consisted of 824 feet of drifting, 296 feet of crosscutting, and 2,123 feet of raising. A total of 80,483 tonnes was hoisted, in which the milling facility would end up processing 76,388 tonnes of ore at a daily production rate of 207 tons. The total recovery of all the tonnage milled had recovered 21,367 ounces of gold (Au), and 3,097 ounces of silver (Ag). The total development footage upon closing this mine down was estimated at 101,701 feet of drifting, 32,921 feet of crosscutting, and 70,287 feet of raising. This was rather the ending point for the McKenzie Island Red Lake Gold Mine at the time.