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Mesa 1° x 2° NTMS Area, Arizona: Data Report (Abbreviated)

Description: From abstract: This abbreviated data report presents results of ground water and stream/surface sediment reconnaissance in the National Topographic Map Series (NTMS) Mesa 1 x 2 quadrangle. Surface sediment samples were collected at 713 sites, at a target sampling density of one site per 13 square kilometers (five square miles). Ground water samples were collected at 365 sites. Neutron activation analysis (NAA) results are given for uranium and 16 other elements in sediments, and for uranium and 9 other elements in ground water. Mass spectrometry results are given for helium in ground water. Field measurements and observations are reported for each site. Analytical data and field measurements are presented in tables and maps.
Date: September 1980
Creator: Cook, J. R. & Koller, G. R.
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

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

Mesa NTMS 1° x 2° Quadrangle Area: Supplemental Data Report

Description: From abstract: This data report presents supplemental analytical results for stream sediments and ground water. The samples were collected as part of the SRL-NURE reconnaissance in the National Topographic Map Series (NTMS) Mesa 10 x 2 quadrangle. Results are reported for 24 elements (Ag, As, Ba, Be, Ca, Co, Cr, Cu, K, Li, Mg, Mo, Nb, Ni, P, Pb, Se, Sn, Sr, Th, W, Y, Zn, and extractable U) in sediments and 31 elements (Ag, Al, As, B, Ba, Be, Ca, Ce, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Nb, Ni, P, Sc, Se, Si, Sr, Th, Ti, V, Y, Zn, and Zr) as well as pH, alkalinity, and conductivity in ground water. Field data and NAA data will be open-filed when they are available.
Date: January 1980
Creator: Koller, G. R.
Partner: UNT Libraries Government Documents Department

Uranium Potential in Precambrian Conglomerates of the Central Arizona Arch: Final Report

Description: From purpose: The purpose of this study was to examine the Precambrian conglomerates of central Arizona in sufficient depth to determine whether they contain any obvious uranium concentrations and whether their geologic environment of deposition was permissive or prohibitive of conditions favoring uranium concentration.
Date: January 1981
Creator: Anderson, Phillip & Wirth, Karl R.
Partner: UNT Libraries Government Documents Department

Preliminary Summary of Reconnaissance for Uranium in Arizona

Description: From introduction: A reconnaissance of Arizona uranium deposits was started in October 1950 and continued through April 1951. A total of six man--months was spent by H. C. Granger, E. P. Kaiser, and J. W. Adams. About 40 properties were examined and, of these, six were mapped by plane-table method and six were sketch-mapped. This reconnaissance was not intended as a complete evaluation of all Arizona deposits; other areas and occurrences were not examined during the investigations and are not discussed in this report.
Date: August 1951
Creator: Granger, Harry C.
Partner: UNT Libraries Government Documents Department

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