Cornerstone Materials Inc · Over-exertion (Not Elsewhere Classified)
EMPLOYEE WAS IN TOO MUCH OF A HURRY WHILE CARRYING TOO LARGE OF A LOAD. HE STUMBLED TWISTED HIS LOWER BACK AND PULLED MUSCLES IN LOWER BACK.
Portable Unit No 1 Metal/Non-Metal
Cornerstone Materials Inc
· Surface
Controlled by
Stewart John W
Maricopa County,
AZ
·
Abandoned
MSHA Mine ID: 0201135
MSHA record for Portable Unit No 1 (mine ID 0201135). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.
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- Fatalities
- 0
- Total incidents
- 2
- Years on record
- 1983–1987
- Latest incident
- Apr 1987
No fatalities recorded at this mine.
Reportable incidents
2 on file1987 · 1 incident
1983 · 1 incident
December 12, 1983
AZ · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
HANDLING OF MATERIALS
Cornerstone Materials Inc · Struck by... (Not Elsewhere Classified)
REMOVING ROCK FROM CRUSHER SHOOT BOUNCES AND HIT HAND CAUSED BY METAL PROTRNDING FRON SHOOT WHICH DEFECTED TITLE PATH OF THE MATERIAL.
For insurers, brokers, and safety consultants
The full compliance file on Portable Unit No 1
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.