1980
Diamond-drill rig and orange shack in the Sudbury snow.
The company
Inco Limited was the world’s leading nickel producer, with mines and major processing facilities in Ontario and Manitoba, Canada.
Inco Annual Report 1980, p. 4
That year
In June 1980 Inco announced plans to construct a $21 million cobalt refinery at Port Colborne, Ontario, with annual capacity of two million pounds of high-purity cobalt metal.
Inco Annual Report 1980, p. 10
Source
archive.org/details/Inco1973_1980
Other years 1979