Goaf (?); n.; pl. Goafs (#) or Goaves (#). [Cf. lst Gob.] Mining

That part of a mine from which the mineral has been partially or wholly removed; the waste left in old workings; -- called also gob .

To work the goafgob, to remove the pillars of mineral matter previously left to support the roof, and replace them with props. Ure.

 

© Webster 1913.

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