Alternate namesBlack Hills Tungsten Mining and M, Illing Co Property, Ack Hills,Black Hills Tungsten Co., Heart of the Black Hills
RegionNA
Data scoreC
Coordinates43.91386, -103.50526
References
CUMMINGS J B REPT OF S DAK STATE PLANNING BOARD 1936 TUNGSTEG IN SOUTH DAKOTA P 10 AND 11,14 AND 26-27.SOUTH DAKOTA SCHOOL OF MINES BULL 17 1937 P 142SOUTH DAKOTA SCHOOL OF MINES BULL 12 1918 P 54 TO 56U S BUREAU OF MINES INFO CIRC 7707 P 47