Technical Report Archive and Image Library (TRAIL) - 968 Matching Results

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Mineral Investigation of the Lime Hills, Narrows, and Sand Cove Wilderness Study Areas, Mohave County, Arizona

Description: From introduction: During 1981 the Bureau of Mines conducted a field investigation of the Bureau of Land Management's Lime Hills, Narrows, and Sand Cove Wilderness Study Areas (WSA's), Mohave County, Arizona as part of a joint effort with the Geological Survey to make a mineral survey of the area. Surface workings and outcrops were examined and samples taken from rock sections that appeared to represent most of the mineralized area. Complete analytical results and sample descriptions are available for public inspection at the Bureau of Mines, Intermountain Field Operations Center, Building 20, Denver Federal Center, Denver, Colo. Part of the area also was examined and sampled in 1979 by L. W. Hamm, Bureau of Mines (Villalobos and Hamm, 1980), during a mineral resource study of the Paiute Primitive Area.
Date: 1983
Creator: Briggs, John P.
Partner: UNT Libraries Government Documents Department

Mineral Investigation of the North End Roadless Area, Cochise County, Arizona

Description: From introduction: During the spring and fall of 1979 the U.S. Bureau of Mines made a mineral investigation of the North End Roadless Area, including a literature search, a search of claim records in the Cochise County courthouse and the State office of the Bureau of Land Management, a search for mining claims and mineralized zones, and examination of known mines and prospects. Local residents and officials of mining companies the U.S. Forest Service, and Arizona State government agencies provided information regarding mining activity and mineral deposits.
Date: 1983
Creator: Bigsby, Philip R.
Partner: UNT Libraries Government Documents Department

Mineral Resources of a Part of the Dos Cabezas Mountains Wilderness Study Area (Az-040-065), Cochise County, Arizona

Description: From summary: In January-April 1984, the Bureau of Mines conducted a mineral survey of the Lower Burro Creek Wilderness Study Area as required by Federal Land Policy and Management Act (Public Law 94-579, October 21, 1976). The Lower Burro Creek Wilderness Study Area comprises 21,700 acres in southeastern Mohave and Yavapai Counties, Arizona. Mines and prospects are located on deposits and (or) occurrences of gold, bentonite, magnesite, and agate in the eastern and southeastern part of the study area.
Date: 1985
Creator: Zelten, Jeanne E.
Partner: UNT Libraries Government Documents Department

Mineral Resources of the Harquahala Mountains Study Area (Az-020-095), La Paz and Maricopa Counties, Arizona

Description: From summary: The Harquahala Mountains BLM Wilderness Study Area is in the Basin and Range physiographic province of west-central Arizona. The present study covers 24,735 acres of the 72,675 acre wilderness study area, preliminary recommended as suitable for inclusion in the National Wilderness Preservation System in La Paz and Maricopa Counties, Arizona. During the winter of 1983-84, under authority of the Federal Land Policy and Management Act (Public Law 94-579), the Bureau mapped and sampled mines and prospects in and near the WSA to determine the mineral resources present.
Date: 1985
Creator: Thompson, John R.
Partner: UNT Libraries Government Documents Department

Mineral Resources of the Lower Burro Creek Wilderness Study Area (Az-020-060), Mohave and Yavapai Counties, Arizona

Description: From summary: In January-April 1984, the Bureau of Mines conducted a mineral survey of the Lower Burro Creek Wilderness Study Area as required by Federal Land Policy and Management Act (Public Law 94-579, October 21, 1976). The Lower Burro Creek Wilderness Study Area comprises 21,700 acres in southeastern Mohave and Yavapai Counties, Arizona.
Date: 1985
Creator: Schreiner, Russell A.
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

Mineral Investigation of the Arrastra Mountain Wilderness Study Area, La Paz, Mohave, and Yavapai Counties, and Peoples Canyon Wilderness Study Area, Yavapai County, Arizona

Description: This report presents the results of a mineral survey of the Arrastra Mountain (AZ 020-059) and Peoples Canyon (AZ 020-068) Wilderness Study Areas, La Paz, Mohove, and Yavapai Counties, Arizona.
Date: 1985
Creator: Lane, Michael E.
Partner: UNT Libraries Government Documents Department

Mineral Investigation of the Sierra Ancha Wilderness and Salome Study Area, Gila County, Arizona

Description: This report presents the results of the mineral survey of the Sierra Ancha Wilderness and Salome Study Area conducted by the U.S. Bureau of Mines. A combined summary report of work done by the U.S. Geological Survey and U.S. Bureau of Mines has been previously published.
Date: 1985
Creator: Light, Thomas D.
Partner: UNT Libraries Government Documents Department

Method and Cost of Mining the Thick Freeport Coal in a Second Western Pennsylvania Mine

Description: From introduction: The purpose of this paper is to present a detailed description of the methods employed and the equipment used, with the results obtained in the operation of this mine in the thick Freeport bed on the northern end of the field, near the Alleghegny-Butler county line in western Pennsylvania. It may be classed as a captive mine, as the largest portion of the product is consumed at the by-product plants of the parent company
Date: July 1929
Creator: Paul, James Washington & Tomlinson, H.
Partner: UNT Libraries Government Documents Department

Structural Analysis of a Mechanized LHD Trench Undercut Caving System

Description: Abstract: This U. S. Bureau of Mines (USBM) report presents results of stress analyses and field observations to investigate the effects of elevated trench drifts on the structural stability of rock mass zones surrounding a production draw drift in a mine utilizing a mechanized load-haul-dump (LHD) trench undercut panel caving system. A two-dimensional boundary-element mine stress model was developed to predict the locations and extent of damaged rock mass zones surrounding draw drifts where adjacent, parallel trench drifts are either elevated or not elevated above the LHD production draw drift level. A Mohr-Coulomb shear-failure criterion was obtained directly from in situ borehole shear test data. Hoek-Brown shear-failure parameter values were computed from borehole-shear and triaxial test data. A procedure is described to estimate these parameters when a rock mass rating (RMR) value and triaxial data on intact samples exist, and no borehole shear test data exist. Results indicate that trench drifts, elevated to the level equal to the height of the LHD production draw drift, would not minimize material damage nor significantly enhance the stability of rib and crown pillar zones surrounding production draw drifts in the mechanized LHD trench undercut caving panel investigated at this mine.
Date: 1995
Creator: Jude, Charles V.
Partner: UNT Libraries Government Documents Department

High-Temperature Cyanide Leaching of Platinum-Group Metals from Automobile Catalysts--Pilot Plant Study

Description: From abstract: The U.S. Bureau of Mines Reno Research Center investigated, developed, and patented a high temperature cyanide leaching process for recovering platinum-group metals (PGM) from automobile catalysts. A batch pilot plant was constructed at the center and operated to demonstrate this technology to industry.
Date: 1995
Creator: Kuczynski, R. J.; Atkinson, G. B. & Dolinar, W. J.
Partner: UNT Libraries Government Documents Department