GOLD COIN (GOLD COIN MINES CO.) Georgetown District. Deer Lodge County. Minerals Yearbook 1939. Page 375. Produced several hundred tons of gold ore. Treated several thousand tons of old tailings by cyanidation. Gold output less than 1937.
WPA, "Gold Coin" (1939). Minerals Yearbook, All. 623.
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Gold Coin, Georgetown District, Deer Lodge County, gold, cyanidation