Difference between revisions of "Drift mine"
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| − | A drift mine is a type of coal mine that is driven horizontally into [[coal]] that is exposed or accessible in a hillside. | + | 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 coal bed 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. | In a [[hydraulic mine]], high-pressure water jets break the [[coal]] from a steeply inclined, thick coal bed 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. | ||
Revision as of 18:02, October 3, 2007
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 coal bed 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.