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Into The Next Millenium - The Long Bull Market In MineralsBy David Williamson
In the post-World War II years, metals analysts and statisticians have tracked the demand for metals in line with changes in Organization of Economic Cooperation and Development (OECD) industrial prod
Jan 1, 1997
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The Rhondda Fach: Migration And MortalityBy Timothy J. L. Haley
The population of the Rhondda underwent a spectacular rise as energy requirements increased in the mid-nineteenth century. The rapid expansion in the demand for coal transformed the population from a
Jan 1, 1993
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Chemical Consolidation In A Mixed Face TunnelBy Terence G. McCusker, E. Roy Anderson
A four-mile length of interceptor sewer tunnel in Manhattan has finished sizes ranging from 10'6" to 14'6" horseshoe. Mixed face conditions were anticipated in three areas and encountered in
Jan 1, 1997
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Seismic Exploration Applied To Underground Excavation ProblemsBy R. W. Mossman, George E. Heim
Seismic exploration techniques offer the engineer and geologist a way of obtaining detailed information on the physical parameters and geometry of the rocks where extensive underground excavation or t
Jan 1, 1997
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High Speed Shaft Sinking Techniques In South AfricaBy David M. MacGillivray
1. INTRODUCTION The economic importance of bringing a new mine to production in the shortest possible time, is well known. In recent years the rate of escalation of mining costs has accelerated mor
Jan 1, 1979
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Wall Slip Velocity Modelling Of High Concentrated Coal -Water SlurryThe rheological behavior of high concentrated coal -water slurry (cws), a new liquid fuel, is an important factor in the preparation, transportation and combustion. The conventional viscosimeters desi
Jan 1, 1994
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The Analysis And Simulation Of Once-Through CrushersBy R. S. C. Rogers
A mathematical model is proposed as a general formulation for the analysis and simulation of once-through crushing machines. Methods are described which can be used to estimate parameters of the propo
Jan 1, 1984
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The Economics And Productivity Impact Of Trolley Assisted Truck HaulageBy J. H. Dietz
The electric assist option for diesel-electric trucks can improve truck productivity while maintaining the inherent flexibility of a truck and shovel operation. In addition, the resulting cost reducti
Jan 1, 1984
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Chimney Subsidence Development In The Colorado Springs Coal Field, ColoradoBy G. M. Matheson
Mining in the Colorado Springs coal field took place from the 1880's to 1940's. The depth of mining in the coal field varied from about 10 meters to over 150 meters. Review of sequential his
Jan 1, 1985
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Geophysical Exploration For Iron Ore - IntroductionBy George W. Leney
The iron ore industry might justifiably claim to have originated the science of geophysical prospecting. Their use of geophysical methods was probably the first application of these scientific techniq
Jan 1, 1965
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Samarco-Mineracao And Its Energy Alternatives - Fuel Oil Substitution ? IntroductionBy M. A. A. de Klaver
Due to the current cost and availability of crude oil in Brazil, Samarco Mineracao S. A., as part of its program of quality and productivity optimization and reduction of operating costs, has undertak
Jan 1, 1984
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Lead, Tin, And Precious-Metal Mineralization In The U.S. Virgin Islands - IntroductionBy H. V. Alminas
The U.S. Virgin Islands consist of three major islands (St. Thomas, St. John, and St. Croix) and some 50 smaller islands that are located primarily along the coasts of St. Thomas and St. John. St. Cr
Jan 1, 1987
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Copper Deposits Of The Ruby Creek Area, Ambler River Quadrangle, Alaska ? I. General ? IntroductionBy R. H. W. Chadwick
We in Kennecott are well aware that Alaskans are interested in the progress of our project at Ruby Creek. We would very much like to be able to present you with a final report at this time and tell yo
Jan 1, 1960
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Standard for the Specification of Belt Cleaning Systems Based on PerformanceBy R. Todd Swinderman
Variations in designs between belt cleaner systems are so wide that it is impractical to establish a dimensional stan- dard. The number of variables that affect the efficiency of belt cleaners is too
Jan 1, 2004
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Analysis And Assessment Of Grade Variability For Improving Exploration Planning And Reserve Estimation ? IntroductionBy Edmundo Tulcanaza
Increasing exploration costs and the need to reduce the time-frame from exploration to production presently demand formalized procedures to assist exploration planning and reserve analysis. Explor
Jan 1, 1982
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Origin Of Organic Matter In Sandstone Uranium Deposits Of The Morrison Formation, New Mexico: Geologic And Chemical ConstraintsBy Christine E. Turner-Peterson
Pore-filling organic material concentrated uranium to form sandstone-hosted primary uranium deposits in the Jurassic Morrison Formation of the Grants uranium region, New Mexico. Petrographic observati
Jan 1, 2013
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A Computer Program For The Analysis Of Coal Preparation Plant EconomicsBy Richard D. Zigmond
In this paper, a computer program that has been developed for determining the capital and operating costs for coal preparation plants is described along with its applications. The logic of the compute
Jan 1, 1981
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The Future of Underground Spatial Planning and the Resulting Potential Risks from the Point of View of Mining Subsidence EngineeringBy Carolina Bruecker, Axel Preusse
"The topic of ground movements in Germany has been studied extensively in the past, especially in the field of active mines. The active hard coal mines were finally shut down in 2018 in Germany and li
Jan 1, 2019
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Assurance Methods: A Welfare AnalysisBy J. Roufagalas
Sustainable development requires that exploitation of environmental resources is such that it does not result in permanent damage to the environment. In many instances environmental damage is an exter
Jan 1, 2007
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Innovative Rehabilitation Approach for Overstressed Existing Linings Using an Adaptable Yielding Support SystemBy Ingo Ossenbühl, Wolfgang Dolsak, Vojtech Gall, Axel G. Nitschke
"Yielding support systems for application in underground construction have a long history, primarily in mining. Typical examples are tunnels subject to loading conditions that lead to overstressing of
Jan 1, 2016