U.S. Bureau of Mines, 1944, Old Reliable Mine, Pinal County, Ariz.: U.S. Bureau of Mines War Minerals Report 275, 11 p.
U.S. Bureau of Mines
U.S. Bureau of Mines War Minerals Report 275, 11 p.
Porphyry Copper, Breccia, History, Production, Mineralization, Subsurface, Geochemical Survey, Ore,