Flying rock accident accounts for a great ratio of blasting accidents in open stone pits, which poses serious threat to safe production in mining area.
在诸多露天采场爆破事故中，飞石事故占很大的比率，对矿区的安全生产构成了严重威胁。
Flying rock accident accounts for a great ratio of blasting accidents in open stone pits, which poses serious threat to safe production in mining area.
在诸多露天采场爆破事故中，飞石事故占很大的比率，对矿区的安全生产构成了严重威胁。
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