HIDDEN LAKE (LAKES MNG. & MLLG. SYNDICATE). Red Lion District. Granite County. Minerals Yearbook 1934. Sta. App. Page 397. Produced 1,324 tons of gold ore which was treated by cyanidation and shipped one car of gold ore to the smelter. (12 miles west of Anaconda).
WPA, "Hidden Lake" (1934). Minerals Yearbook, All. 756.
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Hidden Lake, Lakes Mining and Milling Syndicate, Red Lion District, Granite County, gold ore, cyanidation