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Papers - Production - Domestic - Oil and Gas Developments in West Virginia during 1940By David B. Reger
The substantial expansion of previously discovered gas pools was the principal feature of petroleum activity in West Virginia during 1940. At least one new gas pool was discovered and various other su
Jan 1, 1941
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Papers - Production - Domestic - Oil and Gas Developments in West Virginia during 1940By David B. Reger
The substantial expansion of previously discovered gas pools was the principal feature of petroleum activity in West Virginia during 1940. At least one new gas pool was discovered and various other su
Jan 1, 1941
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Innovative Concept In Tailgate Entry Support: Elimination Of Crib Blocks Through Utilization Of New High-Capacity Roof Truss SystemsBy J. C. Stankus, J. J. McCaffrey, S. Guo, S. S. Peng
An innovative concept in longwall tailgate support is discussed. This new concept utilizes a high-capacity roof-truss system to replace conventional wooden cribs. The first field test was conducted at
Jan 1, 1997
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Mechanical Fabric and In-Situ Stress Orientations in the Devonian Gas Shales of the Appalachian BasinBy William J. Gregg
Mechanical testing results on oriented Devonian gas shale core throughout the Appalachian basin show a preferred fracture direction perpendicular to bedding. The preferred direction is generally paral
Jan 1, 1986
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Suralco’s Bauxite Handling SystemBy J. J. De Witte, J. G. Cazort
The Paranam plant in Surinam (formerly Dutch Guiana) was built during 1939-40 to supply crushed and dried bauxite for the growing U.S. aluminum industry, supplementing production from the Suriname Alu
Jan 11, 1960
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The Nature Of Dislocations In Ideal Single Crystals - 1-1 The Need For DislocationsBy J. S. Koehler, F. Seitz
THE dislocation theory of plastic flow originated in 1928, when Prandtl1 suggested that the internal damping of metals of plastic origin might arise from the motion of a crystalline imperfection. Foll
Jan 1, 1954
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Producción y mercadeo del carbón colombianoBy Jairo Londono Arango
El presente texto realiza un diagnóstico sobre la producción y el mercado del carbón colombiano a través de los datos utilizados del último censo minero realizado en 1983, donde de describe los siste
Jul 1, 1985
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Description of Operations - Glass Sand and a Glass Industry in Puerto Rico (Mining Tech., Nov. 1945, T.P. 1939, with discussion)By Howard A. Meyerhoff, J. Earl Frazier
It is not known when silica sand was first noticed along the north coast of Puerto Rico, but the first mention of its occurrence was made in 1922, by N. L. Britton,1 who described its presence in isol
Jan 1, 1948
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Description of Operations - Glass Sand and a Glass Industry in Puerto Rico (Mining Tech., Nov. 1945, T.P. 1939, with discussion)By J. Earl Frazier, Howard A. Meyerhoff
It is not known when silica sand was first noticed along the north coast of Puerto Rico, but the first mention of its occurrence was made in 1922, by N. L. Britton,1 who described its presence in isol
Jan 1, 1948
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Vacuum Lift Systems for the Transport of Broken Rock in ShaftsBy Jones IO
Although small units have been in use formany years, particularly in opal mining at shallow depths, there has been little effort in the past to explore the potential of the vacuum lift system in other
Jan 1, 1984
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INFLUÊNCIA DAS CARACTERÍSTICAS MICROESTRUTURAIS SOBRE AS PROPRIEDADES MAGNÉTICAS DO AÇO SILÍCIO DE GRÃO NÃO ORIENTADO 2%SiBy José Rogério de Oliveira Júnior
Neste trabalho foi determinada a influência do tamanho e da densidade de partículas sobre a perda magnética de um aço silício de grão não orientado (GNO) contendo 2%Si. Amostras provenientes de bobina
Aug 7, 2018
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Selection Methods For Backfilling Dewatering AidsBy G. R. Sawyer
Although backfilling has been in operation for many years, the methods for selecting appropriate slurry dewatering aids have, in some cases, been rather unsophisticated. This has led to many misconcep
Jan 1, 1988
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Part III - Papers - Properties of Green Electroluminescence and Double Injection in Epitaxial Gallium Phosphide at Liquid Nitrogen TemperatureBy Arnold S. Epstein
Tlze green electroluminescence occurring at liquid-nitvogen temperature in epitaxial gallium phosphide diodes is exarnined using the donor dopants silicon and sulfur. Zinc is used as the p-type diffus
Jan 1, 1968
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Carbon-In-Pulp - Recovery Of Gold And SilverThe ability of activated charcoal or carbon to adsorb complex metal ions has been recognized for many years, but it wasn't until the late 1940s and early 1950s that attempts were made to employ c
Jan 1, 1981
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Groundwater Evaluation and Control for Gold Mining ProjectsBy Adrian Brown
Groundwater inflow and impacts have become major aspects in the permitting and operation of many gold mines. First, the hydrothermal or placer genesis of many of the orebodies being investigated or pr
Jan 1, 1988
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Support Selection For The Multi-Lift Mining MethodBy Claude A. Goode
Large quantities of high grade coal exist in thick seams in the United States. Many of these thick seams are too deep to be surface mined and do not lend themselves readily to underground extraction.
Jan 1, 1981
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General Index Volumes XVI to XXJan 1, 1892
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Barium Dispersion in Drainage Sediments in Arid Climatic RegimesBy Bush P. R, Hale M, Dixon C. J, Wheatley M. R
Barium anomalies in drainage sediments can act as indicators of barite mineralization and path- finders for lead-zinc mineralization. Their detection in an arid climate has been investigated in t
Jan 1, 1988
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Institute Medals and Prizes (60ea8b44-5576-43d2-9471-4006f3d457a0)INSTITUTE MEDALS AND PRIZES ASIDE from the John Fritz Medal, in which the Institute participates through its representation on the John Fritz Medal Board, the Institute itself has four awards it may
Jan 1, 1923
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Institute Medals and Prizes (df10ad2f-ae9f-4e5e-ae74-19e3d6c5e7f1)ASIDE from the John Fritz Medal, in which the Institute partici¬pates through its representation on the John Fritz Medal Board, the Institute itself has four awards it may make annually, as fol¬ lows
Jan 1, 1923