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← Standard viewCase study · MSHA Record #220101660042
Bull Gang Foreman, Labor Foreman, Leadman, Section Foreman, Shift Boss fatality
May 28, 2010 at 8:15 PM
Discovery Day Mine · Gold Run Enterprises LLC · Siskiyou County, CA
Investigator narrative
2 miners lit their fuse for a face round and then re-entered blast area prior to the mandated 1 hour wait period. When they were within 25 feet of the face, a misfire detonated. This was against company policy and recent training. 1 miner was killed by the blast and the other injured.
Record details
- Classification
- EXPLOSIVES AND BREAKING AGENTS
- Accident type
- Struck by flying object
- Activity at time
- Blasting, Shoot Coal
- Subunit / location
- UNDERGROUND
- Source of injury
- BROKEN ROCK,COAL,ORE,WSTE
- Nature of injury
- MULTIPLE INJURIES
- Total mining experience
- 35 years
- Experience at this mine
- 0.15 years
- Experience in this job
- 20 years
- Mine type
- Underground
- Sector
- Metal/Nonmetal
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- March 5, 2025 · Calhoun Quarry Inc · IL · Prep Plant Foreman, Supervisor, Mill Plant Supervisor, Kiln Supervisor
The detonator had a dead battery. In order to set off the shot, employee brought up a loader. The loader battery was used to set the shot off. Employee was unable to be inside the shelter provided for blasting.
- March 22, 2016 · Martin Marietta Materials Inc. · IA · Outside Foreman, Leadman
On March 22, 2016 at approximately 6:35pm an employee was struck by flyrock after a shot was detonated. The employee was sitting inside of a pickup approximately 1,200 feet away from the shot when detonated. This incident resulted in a fatality.
- December 4, 2013 · Bayer Construction Company, Inc. · KS · Outside Foreman, Leadman
Individual was hit by fly rock while setting off a shot.