We have raised the coal output by using better mining methods.

我们利用更好的采煤法增加了煤炭产量。

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Roadside support technology is a key technology in coal mining, safe, rational and effective roadside support can guarantee high output and efficiency.

巷道支护技术是煤炭开采中的一项关键技术，安全、合理、有效的巷道支护是保证矿井高产高效的必要条件。

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The feed way of the shearer is the important component of coal technology, it directly affects the output and benefit of the coal mining face.

采煤机的进刀方式是采煤工艺的重要组成部分，它直接影响到工作面的产量和效益。

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Another way of thinking about it is the output of manufacturing industry minus any influence from oil, coal or other mining industries.

FORBES: Margaret Thatcher Did Not Devastate Or Destroy British Industry.

At the same time East Kalimantan, where Bayan operates, is considering plans to cap annual coal output in an effort to promote alternative energy and cut back on the damage coal mining has done to the environment.

FORBES: Low Tuck Kwong