Hart Stone Company Inc: 10 reportable incidents operator
Controlled by
Summit Materials LLC
MSHA operator ID: L12552
Watch this operator
Email me when a new MSHA incident is filed at any Hart Stone Company Inc mine.
- Fatalities
- 0
- Total incidents
- 10
- Mines on record
- 1
- Years on record
- 1986–1991
Top causes
- HANDLING OF MATERIALS 5 non-fatal
- SLIP OR FALL OF PERSON 3 non-fatal
- POWERED HAULAGE 2 non-fatal
Incident timeline
1991
3
1990
3
1988
1
1987
2
1986
1
Mines on record
For insurers, brokers, and safety consultants
Where Hart Stone Company Inc 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.