Placer mining in Nevada [PHOTOCOPY] . history of placer mining, production of placer gold, geology of Nevada deposits, mining methods and equipment, includes detailed descriptions of placer gold districts in Nevada, and a selected bibliography. Prepared in cooperation with the USBM; originally published as University of Nevada Bulletin, v. 30 .
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Eighty-seven placer districts in Arizona are estimated to have produced a minimum of 564,052 ounces of placer gold from 1774 to 1968. The location, areal extent, past production, mining history, and probable lode source summarized for each district are based on information obtained from a wide variety of published reports relating to placer deposits.
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Surface Mining Methods and Equipment. Placer mining is intended for the recovery of heavy minerals from alluvial or placer deposits, using water to excavate, transport, and/or concentr ate minerals. Solution mining is employed for extracting soluble or fusible minerals using water or a lixiviant. 1.2.
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Over the past century, Arizona geologists documented gold lode and placer mining deposits throughout the State. That information first appeared in print as early as 1910 with updates and revisions continuing through the late 1980s. . The University makes no warranties or representations of any kind, and specifically disclaims all warranties .