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The Determination of Silver in Lead Sulphide Concentrate by Atomic Absorption Spectroscopy
By Greaves M. C, Amos M. D
A study was made of the instrumentation and technique of atomic absorption spectroscopy developed by Walsh of the Commonwealth Scientific and Industrial Research Organisation (C.S.I.R.O.), Australia.T
Jan 1, 1961
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OFR-18-73 Investigation Of Requirements And Performance Of Safety Catches On Wire-Rope-Suspended, Man-Carrying Conveyances In United States Coal Mines
By C. H. Larsen
The results of a comprehensive investigation of conveyance arrestment devices (safety catches) in United States coal mines are presented. Availability and use, performance, inspection, maintenance, te
Jan 1, 1972
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Organic Radical Battery: Nitroxide Polymers as a Cathode-Active Material~
By Yan Yuan
Stable Nitroxyl polymers, such as poly (2,2,6,6-tetramenthyl-1-piperidinyloxy-4-yl methacrylate) (PTMA), are known to be effective as cathode active materials for lithium rechargeable betteries.The ni
Jan 1, 2009
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Statistics or geostatistics? Sampling error or nugget effect? - Synopsis
What is a nugget effect? In the early development of geostatistics, the term ?nugget effect? was coined for the apparent discontinuity at the beginning of many semivariogram graphs. This name was chos
Jan 1, 2010
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Kinetic And Equilibrium Effects In Gold Ore Cyanidation
By M. I. Brittan
Cyanide leaching of two West African gold ores was studied in multiple laboratories to provide process-engineering data for plant design purposes. Unusually slow leach extraction kinetics were observe
Jan 1, 2008
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Bench-scale simulation of flotation plant performance
By Stratton-Crawley R., G. E. Agar
"A study has been done of the scale-up of laboratory bench-scale flotation to continuous plant circuit performance. It was found that the impellor speed and the air flow rate influenced the results an
Jan 1, 1982
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Failure Mechanisms in Thermo-Mechanical Fatigue of DS Superalloy Rene 80
By E. O. Abrokwah
Directionally solidified (DS) Rene 80 Superalloy was tested in thermo-mechanical fatigue (TMF) over the temperature range 500-900°C and plastic strain levels from 0.2 to 0.8% using a DSI Gleeble therm
Jan 1, 2011
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OFR-21-79 A Search Process To Locate An Underground Coal Mine To Participate In The Development Of A Labor Management Experiment In Socio-Technical Innovations
By Eric L. Trist
The objective of this contract was to review the results of the Rushton Mining experiment in work organization and design, to explore the extension of knowledge gained from Rushton to other undergroun
Jan 1, 1978
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A Set Of Indices Based On Indentation Tests For Assessment Of Rock Cutting Performance And Rock Properties
By H. Copur
Experimental studies for quantification of force and brittleness indices relevant to rock cutting performance are presented. A simple interpretation method is developed, which quantifies the force-pen
Jan 1, 2003
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The real costs of lubrication
By R. Melley, P. Wissner
The paper looks at the basic theory of tri-bological wear and the role played by the lubricant and its additives. It presents the argument that the “real cost of lubrication” is not the purchase price
Jan 1, 1997
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Importance of Stone in Industry
By Oliver Bowles
ROCK is no doubt the most abundant of all material things because the planet on which we live is made of it. All animal and vegetable organisms and the multitude of natural and manufactured products t
Jan 1, 1934
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Processing of Japan Earth Resources-1 Synthetic Aperture Radar data to aid geological mapping in the Central Coromandel Peninsula
By A B. Christie
Space-based synthetic aperture radar (SAR) data is becoming available over much of the world, includingNew Zealand. Radar imagery has a number of very advantageous features, including all-weather capa
Jan 1, 1994
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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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Coal - Some Geological Factors Affecting the Upper Freeport Coal and Its Quality
By E. F. Koppe
The Upper Freeport coal in the Freeport and New Kensington quadrangles, Pennsylvania, varies from a bony streak to a thick coal deposit often exceeding ninety inches, the "Double" or "Thick Freeport".
Jan 1, 1961
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Electromagnetic Detection Of Trapped Miners - A Report On 94 Field Tests Using Narrowband EM Transmitters To Locate Trapped Miners
By J. Durkin
The Bureau of Mines has conducted field studies in coal mines throughout the United States to determine the effectiveness of electromagnetic techniques in locating miners trapped underground following
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OFR-15(2)-78 Evaluation Of The Application Of Repetitive Fuel/Air Explosions To Rock Ripping - Final Report - Phase II
By John W. Colburn
A tractor-integrated version of an explosive ripping system was developed for mining application. This system utilizes diesel fuel and a tractor-mounted blower supplying 30 psig compressed air to a tw
Jan 1, 1977
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IC 7871 Lode-Tin Mining At Lost River, Seward Peninsula, Alaska ? Summary
By S. H. Lorain
Tin mining on Seward Peninsula, Alaska, has been intermittently active since the early 1900's. Most of the recorded production (over 2,200 short tons of metallic tin) has been obtained from place
Jan 1, 1958
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Tungsten (1011acf0-5ac1-48f0-902f-65e9673a0224)
By A. Ploszajski
This item examines the history and uses of tungsten, from discovery to superalloys via the lightbulb and electron beam instruments.
Apr 1, 2015
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Industrial Minerals Review 2011
Editor?s note: Each year, the June issue of Mining Engineering features an industrial minerals review. Several people put in a fair amount of time in developing the material for this issue, all the
Jan 1, 2012
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OFR-113G-93 Coal Mine Injury Analysis: A Model For Reduction Through Training - Volume VIII - Accident Risk During The Roof Bolting Cycle: Analysis Of Problems And Potential Solutions
By Michael J. Klishis
West Virginia University researchers examined risk and exposure in the roof bolter operator's job and developed approaches for preventing accidents and for evaluating system and human performance
Jan 1, 1993