I.NAME TOLD TO PUSH HIGH WALL IN AND TO START AT LOW END TO HELP LOADER.LOOKS LIKS LIKE HE WAS STRIPPING AT UNSAFE DISTANCE 1-3\ FROM EDGE OF PIT WALL AND PARALLEL WITH PIT WALL.PART OF WALL C AVED IN CAUSING DOZER TO SLIDE OFF WALL 20\.
Columbia Materials: 1 recorded fatality operator
Watch this operator
Email me when a new MSHA incident is filed at any Columbia Materials mine.
Top causes
- MACHINERY 1 fatality
- POWERED HAULAGE 9 non-fatal
- SLIP OR FALL OF PERSON 5 non-fatal
- HANDTOOLS (NONPOWERED) 4 non-fatal
- HANDLING OF MATERIALS 1 non-fatal
- OTHER 1 non-fatal
Incident timeline
Mines on record
- Ina Pit AZ
- DREXEL PIT AZ
- CEMEX - EL MIRAGE AZ
Fatalities under this operator
1 recordedWhere Columbia Materials 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.
The federal record itself stays free on this site. What costs money, and why.