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Structural Conception of an Undercrossing Tunnel Supported by Pipe Canopies: Analytical and Numerical Solutions of a Case Study
By Vinícius Resende Domingues, André Pacheco de Assis, Bernardo Cascão Pires e Albuquerque
"The increasing demand for underground works in urban centers, and in particular the need to build undercrossing tunnels, requires constant evolution in building techniques in order to achieve success
Jan 1, 2016
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Electricity And Circulation Fluidized Bed Power Technology
By Robert Giglio
Looking back over the last 150 years or so, it is not hard to see that electricity has been a primary force in shaping human development. It has been a basic ingredient in our industrial revolutions
Jan 1, 2009
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Practical Methods Of Shallow Shaft Sinking
By James J. Brady, Joginder S. Bhore, Robert B. Gordon, Jimmy W. Honeycutt
The authors of this paper have a combined construction experience of 70 years. They have served as engineers and managers on projects throughout the United States and Canada. Approximately 50 shafts h
Jan 1, 1985
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Extension Of The Geoscience Matrix Method Of Property Valuation To Industrial Minerals
By D. M. Abbott, H. J. Sandri
The geoscience matrix method has proven useful for valuing metallic mineral properties lacking delineated mineral resources or reserves. However, the method explicitly excludes commodity markets from
Jan 1, 2000
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Drill & Blast Implementation Case Study at Multiple Freeport-Mcmoran Sites
By L. Gutierrez, S. Gering, C. Calderon-Arteaga
"Drill and blast represent the most important, and sometimes the costliest processes in the mine. The cost of drilling and blasting operations greatly contributes to the “high cost trends of the overa
Jan 5, 2017
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Influence of hydrodynamics on preflotation process in flotation machine Mining, Metallurgy and Exploration
By W. Pawlos, A. Bakalarz, M. Duchnowska
This paper presents the results of an investigation into the influence of hydrodynamics on a preflotation process for the copper sulfide ore from the Fore-Sudetic Monocline deposits in Poland in a flo
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Mining Foundation of the Southwest Honors its 2004 Inductees
The 22nd Annual American Mining Hall of Fame Awards Banquet sponsored by the Mining Foundation of the Southwest will be held at the Westin La Paloma in Tucson, AZ on Saturday, Dec. 4, 2004. This ye
Jan 1, 2004
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Outburst Of Coal And Gas In Zonguldak Coal Basin Turkey
By A. Fisne
Outburst of gas, coal and rock can be defined as sudden release of coal and rock accompanied by large quantities of gas into the working face or other mine workings. The outburst events appeared rarel
Jan 1, 2012
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An Approach to the Classification of Weak Rock for Tunnel Projects
By Steve Klein
Weak rock is an important consideration in tunnel design and construction due to the difficult ground conditions that are often encountered. Nevertheless, when conditions are favorable high advance ra
Jan 1, 2001
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An Analysis Of Subsidence Movements Associated With An Abandoned Shallow Room-And-Pillar Coal Mine
By Yoginder P.
ACKNOWLEDGEMENTS Authors sincerely appreciate the interest, cooperation and technical support of the coal company management and staff in conducting the study. Without their assistance this study
Jan 1, 1986
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Demonstrating the Financial Impact of Mining Injuries with the Safety Pays in Mining Web Application
By J. R. Heberger
"The Safety Pays in Mining web application, developed by the National Institute for Occupational Safety and Health (NIOSH) Mining Program, helps mines determine the potential costs associated with min
Jan 1, 2018
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Mine Stope Coverage Cuts Acid Mine Drainage
By Joseph J. Feiler
Historical mining operations in Colorado and other western states have resulted in thousands of remnant mine openings. Many are sources of metals loading and acid water generation in surface and grou
Jan 1, 2006
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Selective Uranium Oxidation During In Situ Leaching
By T. Y. Yan
O2, NaCl03, H202, NaOCI and Ce+4 have been examined as oxidants in an alkaline carbonate system for uranium in situ leaching. The South Texas and New Mexico ores contained up to 2.6 meq/g of reducing
Jan 1, 1993
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Whither Mining Engineering Education?
By J. J. K. Daemen
Mining Engineering education is in trouble, if not in crisis. The most visible signs are the decrease in the number of programs that offer the degree, and the continued difficulties in attracting stud
Jan 1, 2004
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Prevention Of Frictional Ignitions
By P. C. Thakur
Frictional ignitions (also called face ignitions) is defined as the rapid oxidation of a mixture of methane and air with a visible flame that could last from a few seconds to several minutes. These i
Jan 1, 2006
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SAG Mill Pilot Testing Of A High-Clay Silver Ore At Gumuskoy, Turkey
By A. C. T. Bigg, Y. Kocak, N. K. Bodur
The Gumuskoy silver mine, owned by the Etibank, in the province of Kutahya, Turkey, has been operating since 1987 with primary, secondary and tertiary crushers, and two parallel single stage ball mill
Jan 1, 2000
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Kaolin and paper : Quality of both products will improve with more sophisticated printing techniques
By Kenneth J. Hartman
Introduction The term kaolin is derived from kauling, a Chinese word meaning high ridge. This was the name of a hill in China where kaolin was first mined several hundred years ago (Murray, 1976). Ot
Jan 4, 1987
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Use of infrared sensors for monitoring methane in underground mines
Federal regulations require the use of methane monitors on all mining machines. All machine-mounted methane monitors currently used in underground coal mines rely on catalytic heat of combustion senso
Jan 1, 2009
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The Development And Commercialization of The Hicom High Intensity Grinding Mill
By T. A. E. Breen
A new high intensity grinding technology has been developed and is now being commercialized by Hicom International of Australia. This has led to the development and manufacture of Hicom 120 grinding m
Jan 1, 1999
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Groundwater Inflow into Hard Rock Tunnels: A New Look at Inflow Equations
By John H. Raymer
Groundwater inflow into hard rock tunnels is strongly affected by recharge and drawdown of the water table. Previous analytical and empirical methods for estimating inflow have generally not accounted
Jan 1, 2005