Cornerstone Materials LLC operator
Controlled by
Donald L Blaser
MSHA operator ID: 0083525
Watch this operator
Email me when a new MSHA incident is filed at any Cornerstone Materials LLC mine.
- Fatalities
- 0
- Total incidents
- 25
- Mines on record
- 2
- Years on record
- 2007–2012
Compliance record
MSHA citations since 2009
15
citations
6
significant & substantial
$1,981
proposed penalties
$1,981
paid to date
Source: MSHA violations data, updated weekly.
Top causes
- HANDLING OF MATERIALS 15 non-fatal
- HANDTOOLS (NONPOWERED) 8 non-fatal
- OTHER 1 non-fatal
- SLIP OR FALL OF PERSON 1 non-fatal
Incident timeline
2012
3
2011
7
2010
3
2009
5
2008
5
2007
2
Mines on record
- Mills AZ
- Santa Cruz AZ