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TECHNICAL CONSIDERATIONS FOR CONTROLLlNG FUGITIVE DUST EMISSIONS IN ORE HANDLING SYSTEMS
By T. W. Mattioli
Restrictions on fugitive emissions and crushing operations continue to get tighter. Although fugitive dust control in the gold mining industry has historically been difficult, there are now several op
Jan 1, 1998
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NEW IDEAS IN HlGH INTENSTIY AUTOGENOUS GRINDING
By Bryan A. Bartley
High intensity, autogenous grinding has been developed in the hard rock, quarry industry and is finding wide application in mineral processing. The autogenous vertical shaft impactor is described and
Jan 1, 1998
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HEAP LEACIIlNG SEMI-REFRACTORY MATERIALS AT GETCHELL, NEVADA
By Allan Neal, Jess W. Smith
FirstMiss Gold Inc., formerly FRM Minerals, Inc., is heap leaching gold from difficult, low grade ores at the Getchell Gold Mine in Humboldt County, Nevada. A two-thousand ton per day facility is leac
Jan 1, 1998
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DEMONSTRATION OF GEOCOATrM HEAP BIOOXIDATION PROCESS AT THE TRES AMIGOS MINE
By Richard Crowell, James Gillaspie
A concentrate biooxidation process was successfully demonstrated in the field in a remote part of northwestern Mexico. A 275 tonne (300 st) biooxidation heap was constructed using GeoBiotics' propri
Jan 1, 1998
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INNOVATIVE TECHNOLOGYAND PROSPECTS OFGOLD AND SILVERRECOVERY FROM Au-Ag BEARING CALCINES, RESIDUES AND TAILINGS
By Peng Yu-mei, Cao Zhi-yun, Fan Qing-en
In China, an enormous amount of Au-Ag bering calcines, residues and tailings are produced each year from various sources in mining, metallurgical and chemical industries. For a long time, these materi
Jan 1, 1998
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HEAP LEACHlNG: KEEP IT SIMPLE
By Thomas J. DeMull
Heap leaching was introduced to the precious metals mining industry approximately two decades ago as a simple, low cost method for recovering gold and silver from ores. Since that time, operational ex
Jan 1, 1998
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EM1ERGING REGULATORY DEVELOPMENTS lN THE USA AND THEIR IMPLICATIONS FOR POND/PAD LINER SELECTION
By Rick T. Richins
Despite what may be overwhelming evidence that natural degradation of cyanide and cyanide attenuation in hydrogeochemical processes are capable of reducing or eliminating potential water quality probl
Jan 1, 1998
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Dense Sludge Process For Reduced AMD Sludge Disposal (PREPRINT 98-42)
By R. L. Zick
The High Density Sludge Process was originally developed by Bethlehem Steel Corporation for use on acid mine drainage and diluted waste pickle liquor discharges requiring continuous chemical treatment
Jan 1, 1998
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Annual Financial Statements ? Report Of The Independent Auditors
To the members of The South African Institute of Mining and Metallurgy We have audited the annual financial statements set out on pages 251 to 257. These financial statements are the responsibility
Jan 1, 1998
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Application Of The Coal Mine Roof Rating (CMRR) To Extended Cuts
Since it was first introduced, the Coal Mine Roof Rating (CMRR) has been widely accepted as a tool for geologic characterization and mine planning. This paper discusses the application of the CMRR to
Jan 1, 1998
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A Preliminary Investigation into Electro-Strengthening of Tailings for Surface and Underground Disposal
By Chappell B
Backfill in the form of mine waste tailings has inherent problems associated with attaining adequate strengths upon placement. Fines are usually removed to ensure adequate drainage, which lowers the
Jan 1, 1998
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Drainage Research at Mount Isa Mines Limited 1992 - 1997
By Chend J
Research conducted into backfill drainage at Mount Isa Mines since 1992 is described. Piping in draining backfilled scopes has been the primary cause of bulkhead failures and emphasis is placed on r
Jan 1, 1998
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The Good, The Bad, And The Ugly" Silica-Its Biology And Physiology
By E. A. Metz
Silicon dioxide, silica, is the most common oxide in the earth' s crust. The health effects of silicon dioxide dust have been known since Biblical times. Agricola's book, published in the mi
Jan 1, 1998
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Dynamic Temperature Measurement Of Overheated Shuttle Car Trailing Cables In Underground Coal Mines (PREPRINT 98-21)
By P. G. Kovalchik
Recent research conducted by NIOSH, Pittsburgh Research Laboratory showed that electrical current levels permitted under present regulations may not limit cable temperatures to less than 90°C in reele
Jan 1, 1998
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Cyanide Control In The Metallurgical Process Of Gold Extraction In Anglogold (S.A.) (ADDENDUM)
By B. J. Vorster
AngloGold South Africa region currently consists of 12 Gold Plants. These plants use a combined total of $20 million of cyanide per annum. Of this, the .major portion (60%) is consumed at two Ergo dum
Jan 1, 1998
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Application of Mineral Processing Techniques to the Recycling of Wastepaper
By Gunther F. Leichtle, James A. Finch, Colin A. Hardie, Cesar O. Gomez
"The recycling of wastepaper has become an important and common process worldwide. Techniques similar to those used in the mineral processing industry are used to produce high quality recycled fibers
Jan 1, 1998
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A Passive Means To Detect Hot Trolley Insulators
By M. R. Yenchek
Faulty insulators on mine trolley/track haulageways may allow the flow of leakage currents into the mine roof and ultimately result in combustion of the local roof material. The National Institute for
Jan 1, 1998
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Advances in Remote Sensing Techniques for Monitoring Rock Falls and Slope Failures (17th CONFERENCE ON GROUND CONTROL IN MINING)
By J. M. Girard
Ground control problems at surface mining operations can occur for a variety of reasons. Stress, gravity loading, rock strength, geology, pore pressure, weather effects, underground workings, and many
Jan 1, 1998
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Discussion - Grade Estimation And Its Precision In Mineral Resources: The Jackknife Approach – Technical Papers, Mining Engineering, Vol. 48, No. 2, pp. 84-88 – Adisoma, G. S., Hester, M. G.
By J. H. Tu
The technical paper correctly points out that the kriging variance is not a good measure of the uncertainty of the estimated (i.e., kriged) value of individual blocks. The au thors claim that their pr
Jan 1, 1998