HIDDEN LAKE MINE (HIDDEN LAKE VENTURE INC.) Red Lion District. Granite County. Minerals Yearbook 1938. Page 350. 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. 759.
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Hidden Lake Venture Inc., Red Lion District, Granite County, gold ore, cyanidation