The influence of aquifer upon the mining coal seam is estimated.

预测了侏罗系含水层对煤层开采的影响。

youdao

The characteristics of damage, movement, evolution in mining coal bed in weathered zone were discussed mainly.

重点论述了风化带内煤层开采的覆岩破坏移动演化特征；

youdao

Successful predicting and controlling technology for safety mining coal on the aquifer with high-pressure are provided.

为深部煤层高承压含水层上安全开采提供了一套较成功的预报和控制技术。

youdao

Mining of coal and logging of the forests became major industries as transportation improved on the rivers and railroads were built.

VOA: special.2009.07.20

He did any kind of work he could find: Farming,coal mining,brick-making.

VOA: special.2010.08.01

This song is about the dangers of coal mining.

VOA: special.2010.06.13

So it can buy royalty streams from coal mining companies (most collect royalties from reserves as well as mining their own coal) at five to seven times cash flow and still boost returns to its own unit holders.

FORBES: Magazine Article

Later that same year, Clinton accompanied Giustra to Colombia, where another of Giustra's mining concerns was brokering a coal mining operation.

CNN: Commentary: Thorny thicket of Bill and Hillary Clinton conflicts?

Bumi's current management also announced further steps in its plan to consolidate control of another Indonesian coal-mining subsidiary, Berau Coal, of which it owns 85%.

BBC: Bumi board fights Rothschild plan