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Whitewood mine
Whitewood is an Albertan coal mine located just north of Lake Wabamun, about sixty-five kilometres west of Edmonton, Alberta. Owned by the TransAlta Corporation of Calgary, the mine has been run by Luscar Ltd. (Edmonton) since that company acquired the extraction contract from Fording Coal Ltd. (Calgary) in 2003.
==Geology==
Development of the mining site at Whitewood and the seismic testing done there in the 1980s have allowed geologists to establish the timeframe and geologic phases associated with the formation of the mine's coal bed. Analysis has shown that there are six distinct coal seams present at Whitewood, with deposits from the late Cretaceous found at the deepest intervals, and with Early Tertiary formations found closest to the top.
A few layers of bentonitic gangue appear throughout the coal, most notably a three-metre seam near the uppermost portion of the late Cretaceous zone. Above the twenty to seventy metre thick coal-bearing deposit lies a glacial till several metres deep; this must be removed from the surface before mining of the coal below can begin.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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