| 单词 | placer working |
| 释义 | > as lemmasplacer working placer working n. ΘΚΠ society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > mine by type of operation stream-work1586 opencast?a1650 lavatory1712 lavadero1717 coffin1778 whole working1842 open cut1848 dry- or wet-diggings1849 river diggings1850 placer digging1851 placer working1867 drift mine1882 strip mine1934 1867 R. I. Murchison Siluria (ed. 4) xix. 471 There are placer-workings on rocks containing Jurassic fossils. 1874 R. W. Raymond Statistics Mines & Mining 299 The amount of gold washed from the bed of creeks and placer-workings. 1996 Mining Jrnl. (Nexis) 4 Oct. 31 Ambrex's geochemical reconnaissance programme has identified the source of alluvial gold in the extensive placer workings in the area. < as lemmas |
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