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Rock Bursts in the Lake Superior Copper Mines, Keweenaw Point, Michigan

Description: From Introduction: "The effect of rock pressure may be general and continuous disintegration and reduction in size of pillars of ore and rock left for the support of the workings, resulting in the collapse of hanging wall and the closing of stopes, drifts, and shafts, or the action may be sudden and violent and aside from seriously affecting the workings may present a real hazard to the operation of mines. The object in the preparation of this report is to add to the accumulated information and from the facts presented to make suggestions for protective measures to be taken when possible."
Date: 1929
Creator: Crane, W. R.
Partner: UNT Libraries Government Documents Department

Procedure of the Purchasing and Supply Departments of the Miami Copper Company, Miami, Arizona

Description: Report issued by the U.S. Bureau of Mines discussing the purchasing procedures documented by the Miami Copper Company in Arizona. Supplies, invoices, discounts, and accounting procedures are described in detail. This report includes tables, and illustrations.
Date: May 1932
Creator: Bishop, Fred L. & Keller, Albert E.
Partner: UNT Libraries Government Documents Department

Copper: A Materials Survey

Description: Report issued by the U.S. Bureau of Mines discussing surveys conducted on copper. Physicality, mineral properties, history, geology, production methods, and uses of copper are presented. This report includes maps, tables, illustrations, and photographs.
Date: 1965
Creator: McMahon, A. D.
Partner: UNT Libraries Government Documents Department

Mining, Milling, and Smelting Methods, San Manuel Copper Corporation, Pinal County, Arizona

Description: Report issued by the U.S. Bureau of Mines discussing the mining, milling, and smelting practices of copper in Pinal County, Arizona. Physicality, history, geology, methods, and uses are presented. This report includes maps, tables, illustrations, and photographs.
Date: 1962
Creator: Dale, Vernon B.
Partner: UNT Libraries Government Documents Department

Methods and Costs of Stripping and Mining at the United Verde Open-Pit Mine, Jerome, Arizona

Description: Report issued by the U.S. Bureau of Mines discussing the mining practices and expenses of the United Verde open-pit mine west of Jerome, Arizona. As stated in the introduction, "the purpose of this paper is to present the methods used in developing and operating the mine, and to discuss the problems encountered" (p. 1). This report includes tables, maps, and illustrations.
Date: February 1930
Creator: Alenius, E. M. J.
Partner: UNT Libraries Government Documents Department

Natural Ventilation of Michigan Copper Mines

Description: Technical paper issued by the Bureau of Mines over the ventilation of copper mines in Michigan. Natural ventilation of the mines and mining conditions are discussed. This report includes tables, maps, and illustrations.
Date: 1932
Creator: McElroy, G. E.
Partner: UNT Libraries Government Documents Department

Mining Methods and Costs, Inspiration Consolidated Copper Company, Open-Pit Mine, Gila County, Arizona

Description: Report issued by the U.S. Bureau of Mines discussing copper mining methods and costs in Gila County, Arizona. As stated in the introduction, "this report reviews the underground mining method with emphasis on data and mechanics of block caving as exposed by the open-pit work. It describes the current operating and engineering practice in the open-pit mine with particular emphasis on physical, economic, engineering, and management factors that have affected the choice of mining method and equipment" (p. 1). This report includes maps, tables, illustrations, and photographs.
Date: 1963
Creator: Hardwick, William R.
Partner: UNT Libraries Government Documents Department

The Contact Mining District, Nevada

Description: From abstract: This report summarizes the results of a reexamination, in 1930, of the Contact mining district, in Elko County, northern Nevada. A report published as a result of a visit in 1910 summarizes the major features of the geology of the district, and the principal new data in the present paper pertain to mining development occasioned by the completion of a railroad through the camp in 1925.
Date: 1935
Creator: Schrader, Frank C.
Partner: UNT Libraries Government Documents Department

Ground-Water Monitoring in the Tucson Copper Mining District

Description: Abstract: Ground-water and tailings pond monitoring in the Upper Santa Cruz Basin Mines Task Force's Special Studies Area has been performed to determine the nature and extent of aquifer contamination from copper tailings pond's recharge in the basin. A monitoring program for each of three mining areas (Mines A, B, and D) was developed. Analysis of data shows that recharge from Mine A's ponds has caused increased hardness, sulfate and total dissolved solids in local ground water. However, pumpage in the area has controlled most of the water's movement. Pond recharge from Mine B has led to similar conditions, and the degraded water is moving towards a local public-supply well. Pumpage from Mine D's interceptor wells is controlling some, but not all, of the movement of recharge seepage from Mine D's ponds. Recommendations include the need for enhanced monitoring programs at each current mine site, development of a monitoring program for Mine C's area, development of water budgets for all mines, investigation of tailings pond compaction and sliming, establishment of mine closure plans for containment of recharged pond water, and the need for additional interceptor wells in several locations.
Date: July 1983
Partner: UNT Libraries Government Documents Department

Mining Methods and Costs at the Anaconda Company Berkeley Pit, Butte, Montana

Description: Report issued by the U.S. Bureau of Mines discussing the mining operations in Montana. As stated in the summary, "this report deals with the design and development of the Berkely open-pit mine Butte, Mont., owned and operated by the Anaconda Company" (p. 1). This report includes tables, maps, illustrations, and photographs.
Date: 1959
Creator: McWilliams, John R.
Partner: UNT Libraries Government Documents Department

Investigation of Radioactivity in the Yerington Copper Mine, Lyon County, Nevada

Description: From abstract: A reconnaissance radioactivity survey of the Anaconda Copper Mining Company open-pit copper mine at Yerington, Nevada, was made in October 1953 to investigate the reported occurrence on one of the mine dumps of rock containing 0.022 percent uranium.
Date: June 1955
Creator: Taylor, A. O. & Powers, J. F.
Partner: UNT Libraries Government Documents Department

Zinc-Lead-Copper Resources and General Geology of the Upper Mississippi Valley District

Description: From introduction: This report discusses the general geology of the Upper Mississippi Valley zinc-lead district, the distribution of ore deposits, and some relations of the ore deposits to the major geologic features.
Date: 1955
Creator: Heyl, Allen V.; Lyons, Erwin J.; Agnew, Allen F. & Behre, Charles H., Jr.
Partner: UNT Libraries Government Documents Department

Investigation of West Belt Copper-Zinc Mines, El Dorado, Amador, Calaveras, and Mariposa Counties, California

Description: Report issued by the U.S. Bureau of Mines on the West Belt copper-zinc mines. The properties and characteristics of the mineral composition are presented. The report includes tables and maps.
Date: February 1951
Creator: Wiebelt, Frank J.; Sanborn, W. C.; Trengove, R. R. & Ricker, Spangler
Partner: UNT Libraries Government Documents Department

Open-Pit Copper Mining Methods and Costs at the Bagdad Mine, Bagdad Copper Corporation, Yavapai County, Arizona

Description: Report issued by the U.S. Bureau of Mines discussing the open-pit copper mining of Yavapai County, Arizona. As stated in the summary, "mining methods, including breaking ground, primary drilling and blasting, secondary drilling and blasting, loading, transportation, engineering, and operating control, are described" (p. 1). This report includes tables, maps, illustrations, and photographs.
Date: 1959
Creator: Hardwick, W. R. & Jones, E. L., III
Partner: UNT Libraries Government Documents Department

The Uranium, Tin, and Copper Deposits at Majuba Hill, Pershing County, Nevada

Description: From abstract: Uranium is associated with copper and tin ores in the Majuba Hill area, Antelope mining district, in the central part of the Antelope Range, Pershing County, Nev. About 23, 000 tons of copper and 200 tons of tin ore, a small quantity of lead-silver ore, and some arsenic-silver ore have been produced from the Majuba Hill mine, the Last Chance mine, and a mine in sec. 34, T. 33 N., R. 31 E.
Date: December 1952
Creator: Thurston, Ralph H. & Trites, Albert F., Jr.
Partner: UNT Libraries Government Documents Department