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State Mineral Summaries - 1991 - Introduction
The STATE MINERAL SUMMARIES publication provides estimated data and summaries of mineral activities at the State level for 1990. Most of the estimates are based on nine months data. These summaries ha
Jan 1, 1991
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An Electro-Hydraulic Shovel
By Frank Armstrong
ALL the mining machinery of the Penn Iron Mining Co. has been operated by electric power for several years and when another shovel for stockpile loading was required the advantages of an electric shov
Jan 2, 1916
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Gold Mining in California
By Edwin Higgins
SINCE the "Days of Forty-nine" California has been the premier gold producing state of the union. The greatest production was recorded in 1.852, during which year the state's placer and lode depo
Jan 1, 1925
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Genesis of Clay Minerals
By Ernst A. Hauser
IN a paper published three years ago,' the term "silicic chemistry" was used for the first time to emphasize the increasing importance of the chemistry of silicon in science and technology. The d
Jan 1, 1952
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Investigations into the residual strength of a 2.5 m wide Bushveld Merensky Reef crush pillar - Synopsis
By B. P. Watson
The first crush pillars on the Bushveld platinum mines were introduced at Union Section in 1978. Before the introduction of crush pillars, serious problems were experienced when stoping advanced to a
Jan 1, 2008
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An analysis of roof-pillar-weak floor interaction in partial extraction room-and-pillar mining
By W. M. Pytel
The applicability of the beam theory in analysis of roof- pillar-weak floor interaction in partial extraction room-and-pillar mining is presented. The mine structure is modeled as an equivalent multi-
Jan 1, 1989
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Propriedades Mecânicas A Altas Temperaturas De Ferros Fundidos Cinzentos Aplicados A Cabeçotes De Motor A Diesel
By Heloíza Döering Gasparin
Os efeitos de elevadas temperaturas e do tempo de exposição sobre as propriedades mecânicas de um ferro fundido cinzento hipoeutético foram avaliados em amostras de dois ferros fundidos da classe FC30
Aug 7, 2018
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IC 7890 Block-Caving Mining Methods and Costs, Bagdad Mine, Bagdad Copper Corp
By W. R. Hardwick
This paper describes block -caving methods and practices of the Bagdad Copper Corp. in Yavapai County , Ariz . It is one of a series being prepared by the Federal Bureau of Mines on mining methods , p
Jan 1, 1959
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Reduction of Free Gold Losses in the Cleaner Circuit with the Installation of a Gravity Circuit at the Kemess Mine
By Martin Froehling, Curtis Mohns, Rahim Rajwani, Michael Fullam
"The Kemess mining and milling complex is operated by Northgate Minerals Corporation and is located in the mountains of north-central British Columbia, 430 kilometers northwest of Prince George. The c
Jan 1, 2007
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Carbon-in-Pulp Processing of Gold and Silver Ores - The Experts View the Problems
What is the preferred electrolytic cell design and why? Hall: Considerable research remains to be done on electrolytic cell design. Studies are presently being conducted to determine optimum voltag
Jan 10, 1981
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RI 2910 Potash From New Jersey Greensand Preliminary Report
By J. R. Thoenen
"The curtailment of imports of foreign potash during the World War directed attention to the necessity of establishing a domestic source of potash for fertilizer, and considerable study has been given
Feb 1, 1929
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Institute of Metals Division - Effect of Manganese on the High-Temperature Oxidation of Fe-26Cr Alloy
By M. Cohen, P. E. Beaubien, D. Caplan
Addition of 1 pct Mn to Fe-26 CY ca/(ses a12 increase in scaling rate at 870° and 1090°C. Whereas only the rhombohedral oxide, formrs on tire manganese-free alloy, with manganese present major amounts
Jan 1, 1965
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New Trends in Mining Geology
By George M. Fowler
EVERY year it becomes more difficult to find new mining districts and new ore deposits. Nearly all of the important discoveries so far can be attributed to surface manifestations overlying the ore dep
Jan 1, 1935
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Applications for Mining Privileges in the Light of the Mining Amendment Act 1981
The 1981 Review: In the late 1970s there was an upsurge of interest in the prospecting and mining of this countryÆs mineral resources. That upsurge of interest was accompanied by a mounting public co
Jan 1, 1984
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OFR-29(2)-83 High Angle Conveyor Study - Volume II
By E. A. Mevissen
With the ever increasing consumption of mineral commodities, the vital question is not whether sufficient mineral quantities will be available, but rather can the known existing low grade resources be
Jan 1, 1981
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Notes on the Geology, Quartz Reefs and Minerals of the Waihi Goldfield
The rocks of Waihi and the surrounding district are almost entirely rhyolitic and ande5itic in character. Sedimentary rocks, with the exception of some surface deposits of clay loosely compacted congl
Jan 1, 1902
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Final Report Of Investigation To The Diesel Emissions Evaluation Program (Deep) - Noranda Inc. - Brunswick Mine - Diesel Particulate Filter (DPF) Field Study ? Executive Summary ? About the Project
By S. McGinn
The Brunswick Mine Diesel Particulate Filter Study was one of several research projects initiated by the Diesel Emissions Evaluation Program (DEEP). The study was carried out at Noranda?s Brunswick Mi
Jan 1, 2004
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IC 7093 Reconnaissance Of Mining Districts In Churchill County, Nev. ? Introduction
By William O. Vanderburg
This report3/ gives the reconnaissance of a reconnaissance of the mining districts in Churchill County, Nev., made in the fall of 1938 and spring of 1938 All of the mining districts in the county wer
Jan 1, 1940
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Reservoir Engineering Equipment - Temperature Effects on Subsurface Equipment In Steam Injection Systems
By K. Leutwyler, H. L. Bigelow
Jan 1, 1966
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The Saskatchewan Potash Prorationing and Price Stabilization Program
By D. A. Karvonen
In 1970, the Government of Saskatchewan instituted a program aimed at resolving the dilemma of excess productive capacity over the market demand which existed for potash produced in Saskatchewan. The
Jan 1, 1973