Polycor Oklahoma Inc. · Over-exertion in lifting objects
Employee stated they lifted a track extension and tweaked their lower back.
St Clair Quarry Metal/Non-Metal
Cooper Stone LLC
· Surface
Controlled by
Dustin Cooper
Marble City,
Sequoyah County,
OK
·
Intermittent
MSHA Mine ID: 3401813
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- Fatalities
- 0
- Total incidents
- 6
- Years on record
- 2013–2019
- Latest incident
- Apr 2019
Compliance record
MSHA citations since 2001
57
citations
14
significant & substantial
$18,041
proposed penalties
$17,672
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 |
|---|---|---|---|---|
| 2025 Q4 | 20 | 0 | 0 | 0.0 |
| 2025 Q3 | 18 | 0 | 0 | 0.0 |
| 2025 Q2 | 16 | 0 | 0 | 0.0 |
| 2025 Q1 | 0 | 0 | 0 | |
| 2024 Q4 | 32 | 0 | 0 | 0.0 |
| 2024 Q3 | 18 | 0 | 0 | 0.0 |
| 2024 Q2 | 34 | 0 | 0 | 0.0 |
| 2024 Q1 | 96 | 0 | 0 | 0.0 |
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.
Reportable incidents
6 on file2019 · 1 incident
2018 · 2 incidents
February 21, 2018
OK · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
HANDTOOLS (NONPOWERED)
Polycor Oklahoma Inc. · Over-exertion (Not Elsewhere Classified)
EE was cranking the bench vice when EE felt a sharp pain in the center of EE's back.
Polycor Oklahoma Inc. · Fall to the walkway or working surface
EE was walking on a trailer, slipped and fell because of the frost.
2017 · 1 incident
Polycor Oklahoma Inc. · Contact with heat
EMPLOYEE EXPERIENCED SYMPTOMS OF HEAT-RELATED ILLNESS.
2013 · 2 incidents
October 19, 2013
OK · Metal/Non-Metal
stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer
MACHINERY
Marble City-Cedar Ridge Quarries · Struck by rolling or sliding object
Employee was pulling a track off a rock and the track slid down suddenly and cut his ring finger on his right hand.
June 25, 2013
OK · Metal/Non-Metal
stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer
HANDLING OF MATERIALS
Marble City-Cedar Ridge Quarries · Over-exertion in lifting objects
EE was using a shovel to remove some dirt and heard his shoulder pop.