搜索结果: 1-1 共查到“法学 lignite”相关记录1条 . 查询时间(0.007 秒)
Injuries and illnesses among bituminous and lignite coal miners
Injuries illnesses lignite coal miners
2009/5/7
Data indicate that surface mining is safer than underground mining. The preponderant injury categories are, aspirin, contusion, cut, and fracture; the preponderant illness category is 'dust diseases o...