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drift mining |
Also found in: Wikipedia | 0.02 sec. |
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drift mining [′drift ‚mīn·iŋ] (mining engineering) Working of shallow veins or beds through drifts or shafts from the surface. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Recorded district production exceeds 84,000 ounces of gold, notably from drift mining high-grade placers and tunneling on several bonanza-grade lodes. The mining plan developed utilizes three mining methods: blasthole stoping (50% of ore), room and pillar (30% of ore) and drift mining (20% of ore). It is concluded that the Evans pay streak historically contained higher gold values than the Telegraph, possibly as high as the reported Californian drift mining average of 0. |
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