Is there any serious injury or casualty accident happened in the company during the last 3 years?

最近三年内，贵公司是否发生过重伤或死亡的重大工伤事故？

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The way leading to occurrence of drop casualty accident from hanger is discovered and some preventive measures are put forward.

找出了导致吊架坠落伤亡事故发生的途径，并提出了一些预防措施。

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The coal mine gas explosion accident is the most serious casualty accident of mine, and preventing the gas accident is the most important work in the coal production enterprise.

煤矿瓦斯爆炸事故是矿山伤亡最为严重的事故，防止瓦斯事故发生是煤炭生产企业安全工作中的重中之重。

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"While they may not be needed during a walk, in the event of an accident, a casualty could be sitting in the snow and ice for over an hour before search teams reach them, " he said.

BBC: Wales snow: Rescuers' mountain walk equipment warning