According to the Mine Safety and Health Administration (MSHA), since 2012, falling rocks and materials from hazardous highwalls have resulted in nine mining fatalities and 27 serious injuries. Full story.
Read MoreAccording to the Mine Safety and Health Administration (MSHA), since 2012, falling rocks and materials from hazardous highwalls have resulted in nine mining fatalities and 27 serious injuries. Full story.
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