Waste material used for filling an empty space from which coal has been extracted in a longwall mine; cf. gobbing, n.1 Also: an empty space from…
| 单词 | θ211934 |
| 释义 | society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > area left after extraction of coal (3) gob1802 Waste material used for filling an empty space from which coal has been extracted in a longwall mine; cf. gobbing, n.1 Also: an empty space from… goaf1820 An empty space from which coal has been extracted in a longwall mine, sometimes filled with waste material. Cf. goafing, n. 1. goafing1875 Waste material used for filling an empty space from which coal has been extracted in a longwall mine. Also: an empty space from which coal has been… |
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