The water - inrush possibility during mining depth coal layer is assessed.

评价了肥城煤田深部开采底板突水的可能性。

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The definition of deep strip mining and reasonable mining depth are discussed and determined.

探讨了深部条带开采的定义以及合理的开采深度范围。

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Large mining depth single seam non-full mining, surface structure has only minor extent of damage.

大采深单一煤层的非充分采动，地面建筑物受损程度很小。

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"Together, Alpha and Cleveland-Cliffs will have the size, the management depth and the mining expertise to compete on the global stage as demand for raw materials continues to increase around the world, " Alpha Chairman Michael Quillen said in a statement to the press.

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