A roof bolter secures the roof of a newly mined section of a coal mine. Studies show roof bolters sometimes have high exposure to the silica dust that is especially toxic to lungs.
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Don Blankenship, former CEO of Massey Energy, is accused of thwarting mine safety enforcement and conspiring to violate mine safety law. Massey Energy owned the Upper Big Branch mine in West Virginia, which exploded in 2010, killing 29.
At an April 25, 2010, service in Beckley, W. Va., for the 29 miners killed in the Upper Big Branch explosion, helmets — placed on crosses — were lined up in their honor.
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