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Automatic identification in miningBy C. Patrick, D. Puckett
The feasibility of monitoring the locations and vital statistics of equipment and personnel in surface and underground mining operations has increased with advancements in radio frequency identificati
Jan 1, 1999
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US soda ash industry - the next decadeBy Dennis S. Kostick
Introduction Soda ash is known chemically as sodium carbonate, an important inorganic chemical. It has been produced for several centuries by processing certain vegetation and minerals. The US soda a
Jan 10, 1985
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Polymer Configuration And Its Importance During The Flocculation Sequence (94e8719c-8690-4feb-b1d9-f4b27d9f1c6e)By D. A. Stanley
The Bureau of Mines has developed an equation which describes the dewatering of clay slurries with polyethylene oxide. This dewatering equation is An _ kC + b where n, k. and
Jan 1, 1989
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Materials Transport in Mineral Processing SystemsBy A. M. Abouzeid, R. Hogg
Materials transport is involved in all phases of mineral processing. Bulk transport is necessary for moving materials between unit operations and through processing devices such as grinding mills. Dif
Jan 1, 1989
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A Comparison of Grouting Through Segment Ports Versus Grouting Behind the Tailcan of Two Segmentally Lined Rock Tunnels—Coxwell Sanitary Bypass Tunnel Project in Toronto, ON and Westerly Storage Tunnel Project in Cleveland, OH - RETC2021By William Hodder, Lisa Smiley, Ehsan Alav
The Don River & Central Waterfront Coxwell Sanitary Bypass Tunnel (CBT) Project in Toronto will extend approximately 10.5 km and be lined using a precast concrete segmental tunnel liner with an intern
Jun 13, 2021
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Frictional Stability of Heterogeneous Surfaces in ContactBy Neville G. W. Cook, John Kemeny
Utilizing the principles of elastic-brittle fracture mechanics, stress-displacement relationships are derived for an elastic solid containing a slip plane consisting of various configurations of colli
Jan 1, 1986
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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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Light and Electric Potential Induced Reversible Wetting on Structured SurfacesBy John Ralston, Rossen Sedev, Nicola Richards, Quinn Anthony, Geoffrey Reynolds
Derivatised 2,4-diketopyrimidine groups have been anchored to planar gold surfaces as self¬-assembled monolayers (SAMs) for chemical and photochemical studies. Three derivatives, 5-methyluracil (thymi
Jan 1, 2003
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On the Management of Gangue Minerals in the Flotation of Platinum Group MineralsBy K. C. Corin, B. McFadzean, J. G. Wiese
The Bushveld Complex of South Africa contains almost 90% of the world’s reserves of platinum group minerals (PGMs). In the flotation of PGMs, there are significant challenges arising from the need to
Jan 1, 2019
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Condemnation Valuation: The Taking Of Mineral Bearing Lands (PREPRINT NUMBER 89-149 )By Jr. Mason
Eminent Domain is the power of the government or municipality to take property for public use without the consent or acceptance of the owner. Typically the agency taking the property will make an offe
Jan 1, 1989
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Mineralogy and Processing Characteristics of Archean Gold Ores from Western AustraliaBy Robert C. Dunne, Jeffery P. Vaughan
The Archean ores of Western Australia are in total the largest producers of gold in Australia. In addition to numerous small and medium sized deposits, the province also contains the giant Kalgoorlie
Jan 1, 1987
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Carbon-Emission Calculation of Large Shield Tunneling—Based on Data-Mining MethodologyBy Xuehui Zhang, Yun Bai, Qiaosong Li, Huiming Wu
"Construction activities account for a large share of the global Greenhouse Gas emission. In the past 10 years, project decision-makers and researchers have been paying more attention to the carbon em
Jan 1, 2016
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Quality Control in the Grouting of Saturated Fractured RockBy Yu. A. Polozov, V. A. Lagunov, O. Yu. Lushinkova, Yu. I. Svirskiy, Eh. Ya. Kipko, Roy A. Williams
The reliable quality assessment of grouting operations is one of the key issues in establishing impermeable grout curtains around shafts, drifts and tunnels. Reliable opera¬tional information on the d
Jan 1, 1993
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Red Mountain No. 3 - Discovery Of The Ore Body, Ouray County, ColoradoBy James Matlock
The announcement of a minable reserve of 13.6 Mt (16 million tons) averaging 0.9 g/t (0.027 oz per ton) Au and 2.4 g/t (0.71 oz per ton) Ag for the open pit-heap leach reserve at Red Mountain No. 3 in
Jan 1, 1990
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Mechanical Properties of RockBy Frank G. Horino, V. E. Hooker
INTRODUCTION The determination and use of mechanical properties of rock in engineering and rock mechanics are rapidly developing. Many of these properties are determined on intact rock specimens; t
Jan 1, 1982
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Mine subsidence effects on a pressurized natural gas pipelineBy C. K. Blair, V. J. Hucka, E. P. Kimball
In central Utah, a coal mining operation is taking place under an 0.5-m (20-in.) pressurized natural gas pipeline. The room-and-pillar method with pillar extraction is being used to extract the coal f
Jan 1, 1987
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Mathematical Modelling Of Oxygen Transfer In A Stirred Tank BioreactorBy Lynton Gormely
Oxygen transfer in a stirred tank bioreactor has been modelled mathematically to determine the trends in transfer efficiency (kg transferred per kWh) with transfer rate, tank depth, superficial veloci
Jan 1, 1990
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Designing for Process Control at Mingo LoganBy Bruce Hern
The last 10 years have seen a dramatic increase in the requirements for product coal quality control. This has led to electric utility sulfur scrubbing, metallurgical blast furnace optimization and co
Jan 1, 1994
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Planning Methane Control In Underground Coal MinesBy P. C. Thakur
Methane has been a hazard since the beginning of coal mining and has influenced, more or less, every aspect of coal mine design. It is receiving increased attention lately because the rate of methane
Jan 1, 1977
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Mine Escapeway Multiuser Training With Desktop Virtual RealityBy Timothy J. Orr, Jami M. Girard
A NIOSH study on occupational deaths between 1980 and 1989 indicated that in the United States, mining had the highest average annual fatality rate (3 1.9 per 100,000 workers) of any other major indus
Jan 1, 2002