| 单词 | hydraulic mining |
| 释义 | > as lemmashydraulic mining hydraulic mining n. a method of mining in which the force of a powerful jet of water is used to wear down a bed of auriferous gravel or earth, and to carry the debris to the sluices where the particles of gold are separated. ΘΚΠ society > occupation and work > industry > mining > [noun] > other specific types of mining shoading1778 nuggeting1852 placer mining1852 reefing1859 hydraulic mining1873 stripping1874 drift mining1877 gouging1877 hydraulicking1880 open-working1881 strip mining1935 horizon mining1947 roadheading1969 1873 R. W. Raymond Statistics Mines & Mining xvii. 390 Hydraulic mining in California—The origin of this branch of mining dates back as far as the spring of 1852. < as lemmas |
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