After comparing with former exploration results, the authors found out the former cognition difference, thus hydrogeological condition cognition will be improved during next level coal mining.

在与以往勘探成果进行对比后，找出了以往认识上存在的差距，提高了进行下一水平开采在水文地质条件上的认识程度。

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Spot iron ore and coking coal prices hit their highest level in two years early this month as crude steel production surged.

随着粗钢生产激增，本月早些时候，铁矿石和炼焦煤现货价格达到了两年来最高水平。

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It has been almost totally explained by the enormous increase in the coal burn at the global level.

BBC: The year in business: 2011

India and China have demonstrated an enormous appetite for coal, riding on a high level of industrialization and urbanization.

FORBES: Can Coal Exports Markets Make Up For Domestic Coal's Plunge?

Announcing a total of 590 redundancies, KPMG said that despite significant efforts in recent months, Scottish Coal had been unable to secure the level of investment required to enable the business to continue.

BBC: Open cast mining