ERMONT (ERMONT MINES INC.) Argenta District. Beaverhead County. Minerals Yearbook 1940. Page 352. Chief producer of district in 1939. 33,163 tons of gold ore milled. Gold content considerably lower than 1938. Operated 100 Cyanidation Plant regularly.
WPA, "Ermont" (1940). Minerals Yearbook, All. 397.
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Ermont, Argenta District, Beaverhead County, gold, cyanidation