HIDDEN LAKE VENTURE INC. Red Lion District. Granite County. Minerals Yearbook 1938. Page 350. Continued to run Hidden Lake Mine; more than 21,000 tons of gold ore were treated in the cyanidation mill in 1937. About same as in 1936.
WPA, "Hidden Lake" (1938). Minerals Yearbook, All. 763.
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Hidden Lake Venture Inc., Red Lion District, Granite County, gold ore, cyanidation