Practice has proved that the coalminingmethods and technology to meet the recovery of the coal requirements have been successfully applied.
实践证明，该采煤方法和回采工艺满足了该煤层的回采要求，得到了成功应用。
2
We have raised the coal output by using better miningmethods.
我们利用更好的采煤法增加了煤炭产量。
3
It expounds various miningmethods and steps, including the bench demarcated, plan mining bench top and bottom floor, the coal and overburden amount of plan mining, and coal quality indicators.