How western USA mine uses three methods to strip overburden. [Shovels and trucks, scraper-dozers, and dragline]
Journal Article
·
· World Coal; (United States)
OSTI ID:5435028
The Elkol-Sorensen mine is a unique multiseam operation in which three methods of removing overburden - shovels and trucks, scraper-dozers, and a dragline - are used to expose 12 major coal seams. This is an uncommon practice at one mine, even in the United States, but since the conditions at the Elkol-Sorensen mine are so varied the mine operators are successfully and simultaneously applying all three methods to remove over 760,500 cubic meters (1,000,000 cubic yards) of overburden a month. The equipment used at Elkol-Sorensen, one of the largest surface coal mines in the USA, has, therefore, been chosen to suit local geological and mining conditions. The seams, which generally dip uniformly at about 18 degrees, vary in thickness from 2.4 to 35 meters (8 to 114 feet), and are interbedded with shale, siltstone, and sandstone.
- OSTI ID:
- 5435028
- Journal Information:
- World Coal; (United States), Journal Name: World Coal; (United States) Vol. 6:2; ISSN WOCOD
- Country of Publication:
- United States
- Language:
- English
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