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VICTIM WAS STRUCK BY A RIB ROLL WHICH MEASURED APPROX. 23 FT LONG X 0" TO 42" THICK AND 10 1/2 FT HIGH. HE SUSTAINED MULTIPLE INJURIES WHICH LED TO HIS DEATH.
WHILE DOING PILLAR EXTRACTION MINING ON THE 001 SECTION A MASSIVE ROOF FALL OCCURRED. THE FINAL PUSH ON THE 2 LEFT BLOCK WAS BEING MINED. THE ROCK FELL ABOVE PERMANENT ROOF SUPPORTS AND OVERRO DE THE SUPPORT POST ALLOWING THE CONTINUOUS MINER AND COAL HAULER TO BE TRAPPED. THE INJURED WAS POSITIONED OUTBY THE MINER AND BETWEEN THE BREAKER AND ROADWAY POSTS OBSERVING THE ROOF. WHEN
EMPLOYEE WAS SUPERVISING MAINTENANCE WORK ON CONTINOUS MINER PLANETARY GEAR TRAM CHAIN BROKE CAUSING A LINK TO FLY 12 FEET STRIKING VICTIM IN NECK CAUSING FATAL INJURY
MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes dust and quartz as separate files and never the silica figure itself. We derive it per sample, score it against the limit, and set the operator's injury rate against a benchmark built from the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality history. Delivered as a PDF with the underlying data as CSV.
The federal record itself stays free on this site. What costs money, and why.