Pickard, B.O., 1912, Bunker Hill mining district of Pinal County, Arizona: Mining Science, v. 66, p. 281-282. Authors Pickard, B.O. Publication Date 1912 Citation Mining Science, v. 66, p. 281-282. State AZ Province BR County PN Placenames Galiuro Mts. Keywords Mineral District Mineralization Porphyry Copper More Keywords Mineral District, Mineralization, Porphyry Copper, AzGeoBib RefNum 7962