By 1920, the Mond Nickel Company had only operated one blast furnace at the Coniston Smelter, and one converter, out of four furnaces, and four converters were operating in 1920. There was no additional heap roasting done during this time period of operating the Coniston Smelter. Prior to this, there was also a total of 31,820 tonnes of ore that was shipped to the Coniston Smelter for further roasting procedures from the Levack Mine. This also resulted in another shipment of 20,375 tonnes of ore from the Worthington Mine. Another 35,541 tonnes were also shipped from the Garson Mine, and a total of 29,915 tonnes was shipped from the Victoria Mine Site. This was also followed by another shipment of 25,639 tonnes of siliceous copper ore from the Bruce Mine Project.
Much of the whole entire concentrator plant was rather enlarge, and new machinery was expected to be place into operation by 1923. The Coniston Smelter was rather build for experimental purposes, and was expected to treat 60 tonnes of ore per day, using concentrating tables, and Mineral Seperation Flotation Machines. From this experimental set up it had proven to be a huge success, and had been treating a total of 70 to 80 tonnes of ore per day. Expectations were also made to increase the production rate to 200 tonnes of ore per day once the new equipment was installed. In addition to this, one furnace in blast had continued to operate at the Coniston Smelter within 1922. Expansions of the smelter had rather resulted in improvement within the smelting practices that increased output. Ore shipments from several mines owned by the Mond Nickel had amounted to 57,067 tonnes of ore from the Garson, 32,737 tonnes of ore from the Victoria Mine, and 22,861 tonnes of ore from the Worthington Mine Site.
Operations at the Coniston Smelter were done from three furnaces, and 3 converters out of the four converters at the Coniston Smelter in 1925. Much attention at the time was aimed at installing the fourth converter 13 by 30- feet, and had replace another 10 by 26-foot shell, in which brought the converter equipment up to four 13 by 30, and one 10 by 26-foot converter into near operation. This also resulted in second 16 by 200-foot stack for the emission of furnaces, and converter gases. Two additional units of contact sulphuric acid plants were place into operation, and had a capacity of 25,000 tonnes of acid per year. Much of the gasses in this plant were taken from the converter hoods, and under went the usual purification, and drying, in which had passed through a heat interchange tank to the contact mass of platinized asbestos. From here it had rather passed through an absorption tower, from which the sulphuric acid goes to the shipping tanks. An oleum system was also installed where further sulphuric trioxide had been absorbed, and oleum of any desired strength was produced as required. Employment rates within the Coniston Plant were rather averaging a total workforce of 686 men at the time.
Some down falls had rather also occurred within the Concentrator, Acid Plant, and Sintering plant during 1927. Most of this was caused due to a fire of unknown origin in January, that destroyed a portion of the ore-bins, during which time regular operations were disorganized. The major fire that had occurred however did not stop the complete suspension of operations, as one furnace was still kept on blast until the required repairs were made to place it back into full operation.
With the much improvement made within 1930, the Sintering Plant was in continous operation during that year. As changes were made, the Coniston Smelter had continued to show favourable results in regards to capacity, and cost. Even a large amount of concentrate was rather treated in which had totalled 812,345 tonnes, and produce 57,879 tons of Bessemer Matte.
Operations at the Coniston Smelter were rather curtailed when only two out of its four blast furnaces had been running from January, to September, 1931. This rather resulted in the stoppage of another blast furnace, in which one was kept in operation from September, to the end of December. Total concentrate that was treated at the Coniston Smelter had amounted 427,717 tonnes, and 23,163 tonnes of Bessemer Matte was produce.
Further operations at the Coniston Smelter had rather continued from January, till July, when all smelting operations were shut down. It was at this time when treatment of the concentrate within that year had amounted to 90,606 tonnes, in which only 9,679 tonnes of Bessemer Matte was produce. In addition to this, there was no construction that took place during 1932, and the smelter it self was kept maintained in first class condition. Most of the smelter shut down was done due to diminishing profits within the copper, and nickel markets prior to the great depression.
Even more changes were made during 1933, when the Coniston Smelter was place back into operation on June. Prior to this restart, the company rather had two blast furnaces, and two converters in operation that year. The total amount of concentrate that was treated had also totalled 328,640 tonnes, and had produce 20,645 tons of Bessemer Matte. Other expansions at the time were also aimed at rebuilding the smelter stack, and the plant it self had shown a high degree of maintenance due to the shut down.
Three blast furnaces at the Coniston Smelter were operated till April, 1934, and operations were done by four after that. A large increase was made towards smelting when the plant had treated 840,980 tonnes of concentrate, and produce 59,732 tons of Bessemer Matte. At one point in time, this smelter was very common to the other smelters within the Sudbury District, in which had produce large capacities, and had lowered cost significantly. A total of 10,763.821 pounds of Nickel Alloy was rather made from the Creighton Ore, and metal recoveries resulted in 74,374 ounces of gold, 1,006,808 ounces of silver, 124, 424 ounces of platinum metals. This also resulted in the sale of 7,469,915 pounds of rolled nickel, 194,870,682 pounds of copper, and 73,516 pounds of selenium worldwide. Only two mining operations were rather operating within the Sudbury District, in which were the Creighton, and the Frood Properties.
Smelting operations in 1958 had rather resulted in the treatment of 532,221 tonnes of concentrate, producing 34,601 tonnes of Bessemer matte. This was also followed by new construction when a concrete block pump house, and a 375-foot concrete, brick lined chimney, having a 15 foot inside diameter at the top was built. New equipment that was added had included a car shakeout, and an 8-foot by 6 inch diameter balling disc. Employment within the Coniston Smelter alone had resulted in a workforce of 614 men, which were employed under F. G. Murphy who was the Superintendent..
By 1959, the Coniston Smelter had rather treated a total of 601,436 tonnes of concentrate, in which produce 48,885 tons of Bessemer matte. New equipment that was added to the smelter had consisted of a 2 motor, 3 phase, Worthington engine, 2 fans, 1 fuel tank, and 1 chlorinator.
Within 1960, the Coniston Smelter would end up treating a total of 467,427 tonnes of concentrate, that had produce 50,554 tonnes of Bessemer Matte. Additions were also made within that time period when 1 crane, 1 circuit breaker, and one, 2,500 K.V.A Transformer was added. Employment within the Coniston Smelter was done by F. G, Murphy, who had a total workforce of 689 men employed.