Department of Labor
Mine Safety and Health Administration
ATRS - Roof Fall
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.
- Check work areas for hazardous roof and rib conditions
- Be aware of loose roof rock that may fall or slide when
pressurizing or leveling the ATRS and/or roof bolting machine
- 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.