| 单词 | ground-sluicing |
| 释义 | > as lemmasground-sluicing ground-sluicing n. ΘΚΠ society > occupation and work > industry > mining > [noun] > washing or streaming > for gold gold washing1683 panning1838 pan-washing1850 rocking1850 ground-sluicing1857 gold panning1882 wash-up1890 blacksanding1906 1857 Hutching's Mag. July 8/1 Among the more important operations connected with gold mining upon an extensive scale, is ‘ground sluicing’. 1860 Harper's Mag. Apr. 612/2 Ground-sluicing accomplishes the same result..with the chance of obtaining from the upper earth some gold, which..would be lost by the first plan. 1865 V. Pyke in App. Jrnls. House of Representatives N.Z. (5th Sess. 3rd Parl.) C.–4 a. 10 Of the various methods of working, that of ground sluicing is most universally adopted—a ground sluice being nothing more than a rectangular drain cut for a depth of about a foot into the surface soil. 1874 A. Bathgate Colonial Experiences viii. 91 In Otago, the principal kind of mining is ground-sluicing..similar to the method of working for tin in Cornwall. < as lemmas |
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