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Drift mine (view source)

Revision as of 14:16, June 24, 2007

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New page: A drift mine is a type of coal mine that is driven horizontally into coal that is exposed or accessible in a hillside. In a hydraulic mine, high-pressure water jets break the coal from a...
A drift mine is a type of coal mine that is driven horizontally into coal that is exposed or accessible in a hillside.

In a hydraulic mine, high-pressure water jets break the coal from a steeply inclined, thick coalbed that would be difficult to mine with the usual underground methods. The coal is then transported to the surface by a system of flumes or by pipeline.

Although currently not in commercial use in the United States, hydraulic mining is used in western Canada.
[[category:energy]]
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