Employee was supervising the installation of forms for the hearth being worked on when a worker lifted the form, lost his grip and the form fell against the left hand of employee.
Twin Buttes Mine Metal/Non-Metal
Freeport-McMoRan Sierrita Inc.
· Surface
Controlled by
Freeport-McMoRan Inc
Green Valley,
Pima County,
AZ
·
Abandoned
MSHA Mine ID: 0203262
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- Fatalities
- 0
- Total incidents
- 4
- Years on record
- 2010–2012
- Latest incident
- Apr 2012
Compliance record
MSHA citations since 2010
20
citations
5
significant & substantial
$2,365
proposed penalties
$2,357
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
Citations per million employee-hours, as reported to MSHA
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2013 Q1 | 500 | 3 | 0 | 6000.0 |
| 2012 Q2 | 500 | 6 | 2 | 12000.0 |
| 2012 Q1 | 0 | 3 | 3 | |
| 2011 Q4 | 0 | 0 | 0 | |
| 2011 Q3 | 0 | 0 | 0 | |
| 2011 Q2 | 0 | 0 | 0 | |
| 2011 Q1 | 300 | 0 | 0 | 0.0 |
| 2010 Q4 | 300 | 7 | 0 | 23333.3 |
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.
Reportable incidents
4 on file2012 · 1 incident
Freeport-McMoRan Sierrita Inc. · Struck by... (Not Elsewhere Classified)
2011 · 2 incidents
August 26, 2011
AZ · Metal/Non-Metal
assayer, geologist, metallurgist, engineer, engineer management
HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Inc. · Over-exertion in lifting objects
EE was correcting a mis-positioned box of core on a pallet, when he twisted while being over extended. EE did not report to Employer until 9/9/11.
June 27, 2011
AZ · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
HANDTOOLS (NONPOWERED)
Freeport-McMoRan Sierrita Inc. · Struck by... (Not Elsewhere Classified)
Employee states while hitting the core barrel to remove core that was stuck, he brought hammer down on his left thumb casing a laceration.
2010 · 1 incident
Freeport-McMoRan Sierrita Inc. · Contact with heat
Employee states that he had just parked the water truck and got out to set the cones down, then hooked the water hose, and as he walked away he passed out and fell to the ground landing face forward.