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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 goaf or gob, to remove the pillars of mineral matter previously left to support the roof, and replace them with props.

(01 Mar 1998)

GNUStep, GNU superoptimiser, Go, go, goa < Prev | Next > goal, goal, goals, goal seek

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