Logistics of underground coal mining/

類似資料

• Underground loudspeaker communication systems in coal mines
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• Coal-age operating handbook of underground mining /
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• Underground coal mining : production and cost functions /
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• Underground disposal of coal mine wastes : a report to the National Science Foundation/
  著者:: United States. National Academy of Sciences, 等
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• Cost-effective drilling and blasting in surface coal mines/
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  出版事項: (1985)