When mining coal in mine, danger of inflammable explosive damp exists all along, once damp explosion accident occur, normally, it can cause disastrous consequence.

在井下煤炭开采过程中，易燃易爆气体瓦斯危害始终存在，而瓦斯爆炸事故一旦发生，一般会造成灾难性的后果。

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During the past fiscal year, as the company fell into loss, the metric hit 75 days, a disastrous situation, partly as a consequence of which interest bearing debt increased to more than JPY 1 trillion (USD 12.5 billion).

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