Mining. A short spike or chisel-like tool which is inserted into a hole or fissure and then struck with a hammer in order to loosen or break apart…
单词 | θ213310 |
释义 | society > occupation and work > equipment > mining equipment > [noun] > wedges, etc. (6) gad1671 Mining. A short spike or chisel-like tool which is inserted into a hole or fissure and then struck with a hammer in order to loosen or break apart… plug1747 In various technical contexts. A metal wedge, driven between two other wedges (known as feathers) to split rock or stones. Frequently in plug and fe… stook and coil1808 Coal Mining. stook and coil, stook and feathers: see quots. stook and feathers1808 Coal Mining. stook and coil, stook and feathers: see quots. Jack1846 Mining. A wedge that is inserted into a fissure and then struck with a hammer, used to separate or cleave rock. Also: a hydraulic device used for… stob1883 Coal Mining. (See quot. 1883.) |
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