FLATHEAD (A.C.M. Co.) Hog Heaven District. Flathead County. Minerals Yearbook 1939. Pages 362, 375. Produced 15,797 tons of silver ore and 4,997 tons of silver lead ore. Also produces lead-zinc ore. A chief lead producer.
WPA, "Flathead" (1939). Minerals Yearbook, All. 482.
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Flathead Mine, Hog Heaven District, Flathead County, silver, lead