shortwall
Språk: English
a mining method in which a continuous strip of coal is extracted from a short face, typically 100-150 feet long, while the remainder of the coal is left in place to support the roof
- a mining method in which a continuous strip of coal is extracted from a short face, typically 100-150 feet long, while the remainder of the coal is left in place to support the roof
På andre språk
- kortveggens Norwegian
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