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Renewables: An Inconvenient Energy Reality
By L. Alan Weakly
Global warming is a political reality in the United States today. The actual impact of the continued utilization of fossil fuels is not known and is open to debate. However, the growing concern abou
Jan 1, 2008
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US Share of World Mineral Markets: Where Are We Headed?
By Graham Davis
The future of the world's minerals industries is often painted as bleak. Peter Drucker has repeatedly proposed that the demand for minerals has become "uncoupled" from world economic growth.&apos
Jan 1, 1994
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Iron Removal From Turkish Quartz Sand By Chemical Leaching And Bioleaching
By V. Arslan
The primary advantage of using oxalic acid is in the formation during leaching of soluble complexes that are both photo-chemically and microbiologically degradable. In this study, chemical leaching an
Jan 1, 2009
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Design And Preliminary Testing Of Low-Energy Planetary Excavator - Preprint 09-134
Development of a permanent human base on the Moon for exploration requires a self sustaining system. This entails production and processing of limited amounts of raw material on the Moon. Any mining a
Jan 1, 2009
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Sharing Best Practices from Other Industries and Identifying the Gap Using the Maintenancescoretest
By C. Frenzel, N. Blechschmidt
"INTRODUCTION There is no doubt about the time and effort companies put in establishing and maintaining their equipment. However, the question about how these companies can map the benefits comes up.
Jan 1, 2018
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An Algorithm For Analyticalsolutions And Analysis Of Mineral Processing Circuits
By A. Noble
Traditional simulations of mineral processing circuits are solved by straightforward numerical techniques which require iteration to accommodate recirculating loads. Depending on the complexity of the
Jan 1, 2012
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Lyon–Turin Long and Deep Railway Tunnel Project
By P. Fauvel, V. Nasri
In January 2001, French and Italian governments signed an agreement for the construction of a new Lyon-Turin railway line. This project includes a tunnel of 53.1 km length and a maximum of 2500 m over
Jan 1, 2005
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Discussion – Classification effects in wet ball milling circuits – by R. E. McIvor Technical Papers, MINING ENGINEERING, Vol. 40, No. 8 August 1988, pp. 815-820
By K. Holmberg, D. Herriot
This paper by Mr Mclvor is yet another contribution to the eternal controversy surrounding the benefits, or otherwise, of high circulating loads in closed circuit grinding. Throughout the paper it is
Jan 1, 1989
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Theoretical background of the Crago phosphate flotation process
By C. Guan
Since it was patented in 1942, the Crago process with fatty acid rougher flotation followed by deoiling and amine cleaner flotation has become the standard for phosphate flotation in Florida and North
Jan 1, 2009
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Separation Chemistry In The Refining Of An Off-Grade Molybdenite Concentrate By Leaching With An Acid Mix
By P. M. Prasad
Off-grade molybdenite concentrates, mainly derived from secondary sources as by-products of the processing of copper, uranium and tungsten ores, do not satisfy the purity requirements (percent MoS2) f
Jan 1, 2007
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Coal’s Role in Sustaining Society
By R. Larry Grayson, Joel R. Warneke
The mining industry has searched for a message that will resonate with the public while focusing on the industry’s positive contributions to society. So far, environmental groups remain unconvinced a
Jan 1, 2006
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Diesel Emissions Control Strategies For The Use Of Diesel Engines In Underground Coal Mines – Preprint 97-144
By N. Paas
Diesel powered equipment has been operated in underground coal fir mare than 50 years. According to the Mine Safety and Health Administration (MSHA), there are approximately 3,000 diesel units operati
Feb 24, 1997
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Freeport-McMoRan Finds New Way To Put Waste Oil To Use
Equipment-washing facilities at Freeport-McMo-Ran?s Sierrita Mine in Arizona produce a mixture of oil and water that was difficult to dispose of easily or cheaply. However, after some changes in the f
Jan 1, 2009
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Anticipated Behavior Of Silty Sands In Tunneling
By Ronald E. Heuer, Debra L. Virgens
INTRODUCTION Behavior of clay soils in response to tunneling is reasonably well understood by reference to the tunnel stability factor NT = Pz/su (Peck, 1969; Heuer, 1974). With this analysis tool,
Jan 1, 1987
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Ventilation of the Northern Mujsky Railway Tunnel
By S. G. Gendler
The choice of ventilation schemes in the Northern Mujsky railway tunnel and definition of the nec-essary quantities of air ensuring regulated radiation conditions in the tunnel system has been accompl
Jan 1, 2009
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An Examination Of The Relationship Between WLM Exposure And Dose
By V. A. Leach, J. R. Johnson
The calculation of the dose to the bronchial epithelium, lungs and other body tissues from exposures to airborne radon and thoron daughters requires a knowledge of the pattern of deposition in the res
Jan 1, 1981
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Mineral Policy in Ireland
By Anthony Leddin, Gillian Dooley
This paper is concerned with mineral policy in Ireland and how it might be improved to encourage more exploration and investment in mining in the country. The approach is to first outline the main des
Jan 1, 2005
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Exploring Jurassic Porphyry Coppers In The Amazon Jungle Of Ecuador
By J. D. Lowell, L. Quevedo
I will talk today about a porphyry copper exploration program now underway in the Amazon jungle in the southeastern part of Ecuador near the border with Peru. The project is unusual for two reasons:
Jan 1, 2002
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Some MINExpo Exhibitors Previewed
Bortech’s BoreClad corrosion protection system will be displayed at MINExpo. BoreClad is an innovative system for inside diameter cladding of nozzles, tubes and other circumferential devices. Pressu
Jan 1, 2004
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Coal Beneficiation via the Tapered Fluidized Bed Using Magnetite with a Wide Size Range Mining, Metallurgy and Exploration (57dbcb5f-d720-4602-989e-b44427f0ae7a)
By Xuchen Fan, Chenyang Zhou, Yuemin Zhao, Liang Dong, Chenlong Duan
A gas–solid fluidized bed using magnetite particles is an effective methodology for coal beneficiation in the field of dry coal cleaning. Broadening the size range of magnetite used in the bed decreas