3 edition of Investigation of Keystone and st. George Copper-Zinc Deposits Cochise County, Ariz. found in the catalog.
Investigation of Keystone and st. George Copper-Zinc Deposits Cochise County, Ariz.
United States. Bureau of Mines.
|Series||Report of investigations (United States. Bureau of Mines) -- 4504|
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Additional Physical Format: Online version: Romslo, T.M. Investigation of Keystone and St. George copper-zinc deposits, Cochise County, Ariz.
(OCoLC) An illustration of an open book. Books. An illustration of two cells of a film strip. Video. An illustration of an audio speaker. Audio. An illustration of a " floppy disk. Software. An illustration of two photographs. Images.
An illustration of a heart shape Donate. An illustration of text ellipses. Discovery of the ore deposits in Michigan in the early 's began a new era for copper production in the United States.
Extensive ore bodies were found in Montana and Arizona during the years toand smelter production from domestic ores increased from MT ( tons) in to 27, MT (30, tons) in This banner text can have markup.
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