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Results 1 - 10 from 145 for underground mine in 0.247 sec.
MDAG Case Study 18
Cominco in the 1950's. Redfern Resources purchased the property in the early 1990's, conducted exploratory work, and decided to reopen the mine. Since the mine closed in 1957, there has been ARD (acid rock drainage) flowing from the underground workings and waste rock. A Pollution Abatement ...
www.mdag.com
HOW TO REQUEST A STATE OR FEDERAL COAL MINE INSPECTION
Mine name:What is the name of the specific coal mine? State or tribal lands where coal mine is located: (e.g., Alabama, Navajo ... of water Blasting or explosives problems Unstable backfills or grading Subsidence of land over an underground mine Multiple problems Other type complaint (Described below) Please describe conditions at the site which you ...
www.osmre.gov
BATS AND ABANDONED MINE LAND RECLAMATION
The Office of Surface Mining's abandoned mine land (AML) program, due to the reclamation of underground mine shaft and portals, plays a significant role in the protection ... with Bat Conservation International and the saving of more prime bat habitat in abandoned underground mines. If your interest has been sufficiently tweaked, excellent publications are available. Copies of " ...
www.osmre.gov
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Minesite Drainage Assessment Group
After considerable pressure from Ms. Nora Hutt, ... and #31) and the leaching of nitrogen species (nitrate, nitrite, and ammonia) from an underground mine (Case Study #29). Also, Case Study #25 on silicate neutralization has been updated, and ...
mdag.com
Mining at CANMET-MMSL
Our three areas of concentration are: Ground Control Mechanization and Automation Mine Air Quality and Ventilation Special projects and ... with a particularly unique testing facility at our Experimental Mine in Val-d'Or, Quebec, where we can test in actual underground mine conditions. Last Modified: 2008-01-22 Important Notices ...
www.nrcan.gc.ca
Specialized Services - Mine Mechanization and Automation at CANMET-MMSL
Testing and training underground in our Experimental Mine in Val-d'Or The mine comprises a unique underground hard rock testing and training site, with access ramp and five underground levels. There are ... others. If your company could benefit from testing or adapting mining equipment in an underground mine, please contact us. Narrow-vein mining The mining industry is continuously looking for ways ...
www.nrcan.gc.ca
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Gold Fields Ltd Gold Mine Mining Technology
Mt grading an average 7.4g/t, and containing 21.6Moz of gold. MINING Driefontein is a conventional South African underground mine ... ,000t/month. The company aims to incorporate run-of-mine ore milling and to replace filtration with carbon- ... affected by increased seismicity, while the overall yield from underground decreased from 8.3g/t to 8.1g/t. ...
www.mining-technology.com
De Beers Diamond Mine Mining Technology
Since 1991, production has come from the underground mine beneath the old pit. Production in 2005 totalled 2.22Mct – ... mining at current rates for a further 27 years. MINING The underground mine is accessed via a spiral decline from surface to the ... y of ore. Underground development began in 1978 and the shaft was commissioned in 1982. The upper levels of the underground mine use a ...
www.mining-technology.com
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Media Releases
February 2008 Crevasses put Dendrobium mine extension plans in doubt “Deep splits, a metre wide, have opened up in the water supply catchment due to underground mine at the BHP-Billiton’s Dendrobium colliery[1]. Unless mining intensity is greatly reduced, the currently proposed expansion plans for the Dendrobium mine should be rejected,” ...
www.colongwilderness.org.au
CWAC News September 2002
Since 1994, Nicolet Minerals has sought state, local and federal permits to mine 55 million tons of metallic sulfide ore, primarily copper and zinc, in a huge underground mine ... improve Wisconsin’s groundwater regulations to better conserve underground water supply quantity and quality, and to protect surface waters fed by underground recharge. Currently, the DNR claims it can deny ...
cwac.net
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