Longwall

What is Longwall?

Longwall definition and meaning on Dictionary terms:
adjective Mining.
noting or pertaining to a means of extracting coal or other minerals in an underground mine from a continuous face, the roof before the face being supported at intervals by temporary or movable artificial supports.Compare room-and-pillar.

noun
the continuous face so worked.

 

reference: https://www.dictionary.com/browse/longwall

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