coal production cost

The coal production cost forecast is an extremely complex question.

煤炭生产成本预测是一个非常复杂的问题。

For coal enterprises, the uniqueness of safety work decides a high proportion of safety cost in coal production cost.

对于煤炭企业来讲，安全生产的特殊性决定了安全成本在煤炭生产成本中占有很高的比例。

A coal mining method with a combination of a slicing and caving, a double benefit in control of water conducted crack zone development and in reduction of coal production cost can be obtained.

对厚煤层采用分层与放顶煤相结合的采煤方法，既可控制导水裂缝带的发育高度，又可降低生产成本。