Shaft sinking at the Buckles Property was continued onward when the No. 3 shaft on historical claim S.68948 was sunk a further 163 feet to a depth of 239 feet. It was at this point in time when the shaft had become further developed and a level was eventually cut and stationed on the mines 105-foot horizon in 1956. Lateral development on this level had also amounted to a total of 200 feet of drifting, and 48 feet of crosscutting. Further development would also continue when an ore pass raise was driven from a loading pocket in the shaft to the level at a distance of 107 feet. This was also followed by diamond drilling that would amount to one hole, totalling 120 feet from the surface, and three underground holes, totalling 91 feet in length. Hoisting was also started during the operating season of 1956, when a total of 5,130 tonnes of ore was taken from the underground workings.
With mining continuing this had allowed for much needed construction of structures to become built. Construction at the time was progressing very well when a shaft house, hoist and power house, boiler house, dry house, and warehouse had been erected. Equipment at the time was also installed which included 15 H.P, Inglis Pacific Boiler, three boilers of different makes, a Canadian Ingersoll Rand Compressor, and a 36- by 53 inch, Canadian Ingersoll Rand Double Drum Hoist, driven by a 50-H.P motor.
The Canadian Government had mainly kept a secret as the average grade was far more then 0.17 U308 per ton. No uranium mine could be developed from a small low grade tonnage and the mix up was always one of those things that kept it a secret. Mostly because the Elliot Lake Mines had very high uranium content that could not be discloses fully due to the impacts of radioactivity at these sites. This is one of the principals why the government had kept this at a low grade tonnage by providing false information on the actual grade that was produce. Charts report that the grade of U3O8 was between 0.15 and 0.17, but it had been estimated well over 2 pounds of U3O8 per ton after processing.
No changes were made towards the Vertical, Three Compartment Shaft during the operating year of 1967. The No. 3 main shaft had stayed the same as it bottomed out at a depth of 239 feet and only one level had access these workings while a loading pocket was made under this level. Mining and development at the Buckles Mine was concentrated on making a double road-way for haulage. Most of the need for this double roadway was mainly aimed at making a boundary line between the Buckles Algom Nordic Boundary pillar. Its main attention was aimed at servicing the need for stope development and accessing areas for production purposes. Lateral development was rather escalating at a rapid pace when 2,018 feet of drifting, 91 feet of crosscutting, and 1,818 feet of raising was done. From all development completed the 105-foot level had now amounted to 2,218 feet of drifting, 139 feet of crosscutting, and 1,925 feet of raising in total length. Almost all development work was entirely in ore with the exception of 541 tonnes which was discarded as waste. From all development it was reported that the Buckles Uranium Mine had produce 129,441 tonnes of ore grading in excess of 2.50 pounds of U3O8 per ton. A total of 55,148 tonnes was rather trucked and stockpile at the Spanish American Mine Site, and the remainder had been trucked to the Lake Nordic Mill Site which was located close to the Buckles Mine.
Development mining would continue to progress during 1958, as the Buckles Uranium Mine Site was become exhausted from all available ore. Mining was also continued till October, 25, 1958, when all the ore from the 105-foot level was mined out and only a small portion was left to be mined along the Buckle-Lake Nordic Boundary Line. It was also at this time when an agreement was made between the Algom Nordic Uranium Mines to mine the last section along this boundary line. As this work became completed, it was also reported that all the surface openings to the mine were officially sealed up upon completion. Lateral development for the year of 1958, amounted to a total of 512 feet of drifting, 323 feet of crosscutting, and 362 feet of raising. With this it had also given a total development footage of 2,730 feet of drifting, 462 feet of crosscutting, and 2,287 feet of raising. Production figures for 1958, amounted to 141,118 feet of ore that was hoisted. Most of the ore was also treated at various mills that included the Lacnor and Spanish American Mill Sites.