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Investigation of Arkansas bauxite.
Antler copper-zinc deposit, Mohave County, Ariz.
Investigation of Arkansas bauxite
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas bauxite.
Investigation of Arkansas Bauxite
Investigation of Keystone and St. George copper-zinc deposits, Cochise County, Ariz.
Investigation of Twin Buttes copper mines, Pima County, Ariz.
Investigation of the Lake Shore Copper Deposits, Pinal County, Arizona