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• Arizona manganese-silver ores
• 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.