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District 8 - Coal Mine Safety and Health
Info-Grams and Close Call Accidents


Info-Grams
Close Call Graphic Department of Labor
Mine Safety and Health Administration

Info-Gram
FEBRUARY 2000

ATRS - Roof Fall

PROP
A roof bolting machine operator was roof bolting a crosscut to the left off the No. 4 room the working section. The Long-Airdox dual boom roof bolting machine was positioned in the intersection with the booms toward the left crosscut. The employee had installed five or six roof bolts on the outby corner of the crosscut and was bolting towards the center line of the crosscut. He positioned the boom under a small ledge that was running through the intersection and placed the ATRS against the roof. After installing a bolt in this location, he lowered the ATRS and the rock which had been held up by the ATRS fell and struck him. The rock was approximately 8 feet long by 3 feet wide by 10 inches thick. The employee received contusions to face and back, fracture to right leg, fractured tailbone, and he also received some internal injuries.
Bolter BEST PRACTICES
  • Check work areas for hazardous roof and rib conditions frequently.
  • Be aware of loose roof rock that may fall or slide when pressurizing or leveling the ATRS and/or roof bolting machine canopy.
  • When adverse conditions are encountered, additional measures should be taken to ensure the miner's safety.

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This information was provided by concerned miners in an effort to eliminate accidents. Accident or "close call" information within District 8 may be shared by contacting the MSHA office at (812) 882-7617.