1967
Hot planetary mill at Atlas Steels, Tracy, workers below.
The company
Rio Algom Mines Limited had its offices at 120 Adelaide Street West, Toronto 1, Canada.
Rio Algom Mines Limited Annual Report 1967, p. 2
That year
Rio Algom's Steel Division produced 135,302 tons of specialty steel in 1967, compared with 141,875 tons in 1966.
Rio Algom Mines Limited Annual Report 1967, p. 3
Source
archive.org/details/RioA0508_1967
Other years 1971