DRIVER WAS DUMPING LOAD OF SHOT ROCK ON STOCKPILE. EMPLOYEE FAILED TO OBSERVE UNDERCUT STOCKPILE. STOCKPILE MOVED AS EMPLOYEE WAS DUMPING. TRUCK FLIPPED OVER BACKWARDS LANDING ON ITS BED AT THE BASE OF THE STOCKPILE. DRIVER ALSO FAILED TO USE SEAT BELT AS INSTRUCTED. MAN DIED 7-8-91.
Keystone Cement Company: 1 recorded fatality operator
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Top causes
- POWERED HAULAGE 1 fatality · 11 non-fatal
- HANDLING OF MATERIALS 50 non-fatal
- SLIP OR FALL OF PERSON 36 non-fatal
- MACHINERY 23 non-fatal
- HANDTOOLS (NONPOWERED) 22 non-fatal
- STEPPING OR KNEELING ON OBJECT 4 non-fatal
Incident timeline
Mines on record
Fatalities under this operator
1 recordedWhere Keystone Cement Company stands on silica, penalties, and injury rate
MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes dust and quartz as separate files and never the silica figure itself. We derive it per sample, score it against the limit, and set the operator's injury rate against a benchmark built from the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality history. Delivered as a PDF with the underlying data as CSV.
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