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G. M. Colvocoresses mining collection: Harqua Hala Tailings


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Documents from the G. M. Colvocoresses mining collection. Description: Flowsheet of mill, correspondence, report by Mills, report by Carpenter with assays, report on cyanide plant at mine by Beauchamp, operation accounts, mill record, lease agreement, excerpt titled Re-treating Tailings for Gold at Mercur, extracts from report of Mr. Thomas D. Murphy on cyanide operation July 1895 to June 1896, record of shipments, map of tailing dumps at Bonanza Mine scale 1=50', receipts of transactions and assays, clipping titled Novel Scraper Practice, assays, metallurgical statement cyanide plant. Property Name: Harquahala Mine. Property AKA: Bonanza; Golden Eagle Mine; Harquahala Placers

Material Request Instructions

ResourceID: 1986-01-0135, Repository: Arizona Geological Survey, Contact: Mining Records Curator, Address: 1520 West Adams St Phoenix AZ 85007, E-mail:, Phone: 602-771-1601



  • National Digital Catalog



Item created by file upload. (Last imported on Fri May 03 11:04:45 MDT 2013)

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  • 1986-01-0135


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title Parent-4fce7918e4b05b6193661483 G. M. Colvocoresses mining collection: Harqua Hala Tailings

NGGDPP Item Extension

alternateGeometryCountry: United States; State: Arizona; County: Yuma; TRS: T4N R13W Sec 22

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