FLATHEAD MINE (A.C.M. Co.) Hog Heaven District. Flathead County. Minerals Yearbook 1938. Pages 349. Production in 1937 comprised 17,388 tons of silver ore and 3,610 tons of lead ore shipped for smelting.
WPA, "Flathead" (1938). Minerals Yearbook, All. 481.
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Flathead Mine, Hog Heaven District, Flathead County, silver