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GB/T 41042-2021 Guidance for utilization and classification of content of valuable elements in coal 煤中有价元素含量分级及应用导则 - 中英文版 |
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GB/T 31392-2015 Technical guidance for the utilization of coal mine water 煤矿矿井水利用技术导则 - 中英文版 |
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GB/T 29163-2012 Technical guidance for the utilization of gangue 煤矸石利用技术导则 - 中英文版 |
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GB/T 28754-2012 Guidance for utilization of coal bed methane (coal mine gas) 煤层气(煤矿瓦斯)利用导则 - 中英文版 |
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