| 单词 | ring crib |
| 释义 | > as lemmasring crib ΘΚΠ society > occupation and work > equipment > mining equipment > [noun] > pit supports yoking1653 set1830 crib1839 tub1839 wedging crib1839 cribbing1841 ring crib1849 tack1849 tymp1883 1849 G. C. Greenwell Gloss. Terms Coal Trade Northumberland & Durham 19 A ring crib may be made of metal or oak, of the same size as a wedging crib. It is open at the top, for the purpose of collecting water, which would otherwise fall down the pit. 1887 Trans. Mining Inst. Scotl. 8 237 A ring crib is laid at the bottom and fresh piles driven down, and so on until the stone-head is reached. 1892 R. O. Heslop Northumberland Words I. 199 A ring crib is an arrangement for catching water which would otherwise fall down the shaft. < as lemmas |
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