Home > Term: draw slate
draw slate
A soft slate, shale, or rock approx. 2 in (5.08 cm) to 2 ft (0.61 m) in thickness, above the coal, and which falls with the coal or soon after the coal is removed.
- Szófaj: noun
- Ipar/Tárgykör: Mining
- Kategória: General mining; Mineral mining
- Government Agency: USBM
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- ed.young
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(Milwaukee, United States)
