| 单词 | drift mining |
| 释义 | > as lemmasdrift mining drift mining n. 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 1877 R. W. Raymond Statistics Mines & Mining 44 At Central Hill the drift-mining claims have been steadily worked with varied success. 1889 H. Greene Coal & Coal Mines vii. 82 The day of drift mining in the anthracite regions has gone by. 1976 Nature 29 Apr. 739/3 Geological conditions are sufficiently favourable to allow extraction using ‘drift mining’ techniques, involving production through a single sloping tunnel rather than multiple vertical shafts. < as lemmas |
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