Shaft mine

Shaft mine
  A mine that reaches the coal bed by means of a vertical shaft.
  U.S. Dept. of Energy, Energy Information Administration's Energy Glossary

Energy terms . 2014.

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  • shaft — [shaft, shäft] n. [ME schaft < OE sceaft, akin to Ger schaft < IE base * (s)kap , to cut with a sharp tool > SHAVE, Gr skapos, rod, L scapus, shaft, stalk] 1. a) the long stem or body of an arrow or spear b) an arrow or spear 2. a… …   English World dictionary

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