North Antelope Rochelle

A miner was killed at Peabody Energy's North Antelope Rochelle coal mine in the Powder River Basin over the weekend, according to the Mine Safety and Health Administration. The Gillette News Record reports that Darwin Lee Reimer, 51, was driving a haul truck when it went over a highwall. 

NASA

Three miners are being treated for serious burns after a coal-dust fire at the North Antelope Rochelle mine on Tuesday.

The fire started while the workers were changing a bearing on a conveyor, according to Amy Louviere, a spokesperson for the Mine Safety and Health Administration. She writes in an email that coal dust filled the space the workers were in, and was ignited by the machinery. The agency is investigating.