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某单位未经审批进行一次硐室爆破 ,爆破产生飞石和振动 ,危及民宅 ,现将爆破事故原因进行分析 ,以期引起重视。
A unit without approval of a chamber blasting, blasting generated flying stone and vibration, endangering houses, the blasting accident is now analyzed, with a view to attracting attention.