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- MSHA WEBCAST
- WITH STAKEHOLDERS
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- Heightened awareness of fatal accidents involving remote control
continuous mining machines
- Update on proximity device – Dave Chirdon (MSHA)
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- A safety system that provides proximity detection and machine shutdown
when personnel are positioned in a hazardous area close to the machine.
- Consists of:
- beltpack unit worn by machine operator;
- on-board logic and antenna;
- receiver and transmitter that communicate warning and shutdown
commands.
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- Nautilus International provides proximity protection system.
- Massey Energy provides machine and miner for installation and field
testing.
- Joy Mining provides installation assistance and technical support.
- MSHA coordinates activities; provides permissibility evaluation; and
conducts field testing studies.
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- Permissible system designed and installed on Massey 12CM in April 2003
- Field testing started in July 2003
- Problems identified with on-board antenna and beltpack unit requiring
re-design
- Re-design completed and system currently being installed on Joy 12CM in
Franklin, PA
- Field testing expected to resume in early spring
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- COAL MINE FATALITY - On Friday, March 24, 1995, a maintenance trainee
was fatally injured while working as a continuous mining machine helper.
The continuous mining machine operator, utilizing a remote control, was
in the process of tramming the continuous mining machine through a
crosscut. The operator was walking in front of the machine as the
machine moved toward him. The maintenance trainee was attending to the
continuous mining machine power cable at the rear of the machine. When
the continuous mining machine was "squirmed" the conveyor boom
crushed the trainee against the inby rib of the crosscut. The victim had
three weeks of mining experience.
- The continuous mining machine operator's line of sight to the rear of
the mining machine and the victim, a distance of thirty feet, was
obstructed by illumination from the mining machine's headlight. Two
other employees were in close proximity to the moving continuous mining
machine, between the machine's operator and the victim.
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