Mining Incidents

Gray Rock Quarry Metal/Non-Metal

Shasta County, CA  ·  Abandoned
MSHA Mine ID: 0404349

MSHA record for Gray Rock Quarry (mine ID 0404349). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.

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Fatalities
0
Total incidents
1
Years on record
1983
Latest incident
Jul 1983
No fatalities recorded at this mine.

Reportable incidents

1 on file

1983 · 1 incident

July 29, 1983 CA · Metal/Non-Metal driller, highwall operator, highwall drill operator MACHINERY
Calaveras Cement Company · Caught in, under or between (Not Elsewhere Classified)

INJURED WAS HOLDING A CENTRALIZING COUPLER ON THE KELLY BAR DRILL STEEL WHILE ANOTHER MINER WAS HOLDING THE HAMMER ON THE GROUND ANOTHER MINER WAS OPERATING THE ROCK DRILL AND WHEN THE KELLY B AR THREADS CAME IN CONTACT WITH THE FEMALE END OF THE HAMMER THE INJUREDS RIGHT MIDDLE FINGER WA

For insurers, brokers, and safety consultants

The full compliance file on Gray Rock Quarry

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.