ERMONT MINE Argenta District. Beaverhead County. Minerals Yearbook 1938. Page 348. 30,250 tons of ore were treated, the output of gold from the district had a marked increase over 1936.
WPA, "Ermont Mine" (1938). Minerals Yearbook, All. 400.
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Ermont, Argenta District, Beaverhead County, gold