Miner was closing a valve and their hand slipped as they were tightening the valve. Miner lost balance and they attempted to catch themselves as they fell. Miner injured their left elbow when they fell.
Thun Field Pit Metal/Non-Metal
Thun Field Pit has $49K in proposed MSHA penalties and $11K outstanding across 1 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 18
- Years on record
- 1990–2023
- Latest incident
- Oct 2023
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This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Thun Field Pit has $49K in proposed MSHA penalties and $11K outstanding across 1 contested dockets.
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Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.ⓘ
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 5,636 | 9 | 2 | 1596.9 |
| 2025 Q3 | 5,797 | 5 | 1 | 862.5 |
| 2025 Q2 | 6,708 | 0 | 0 | 0.0 |
| 2025 Q1 | 6,881 | 2 | 0 | 290.7 |
| 2024 Q4 | 6,881 | 0 | 0 | 0.0 |
| 2024 Q3 | 6,497 | 0 | 0 | 0.0 |
| 2024 Q2 | 7,779 | 11 | 4 | 1414.1 |
| 2024 Q1 | 6,605 | 0 | 0 | 0.0 |
Show 96 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 6,222 | 2 | 0 | 321.4 |
| 2023 Q3 | 6,668 | 0 | 0 | 0.0 |
| 2023 Q2 | 7,367 | 0 | 0 | 0.0 |
| 2023 Q1 | 7,338 | 0 | 0 | 0.0 |
| 2022 Q4 | 6,197 | 0 | 0 | 0.0 |
| 2022 Q3 | 6,792 | 2 | 0 | 294.5 |
| 2022 Q2 | 6,712 | 2 | 0 | 298.0 |
| 2022 Q1 | 6,807 | 0 | 0 | 0.0 |
| 2021 Q4 | 6,950 | 1 | 0 | 143.9 |
| 2021 Q3 | 7,106 | 1 | 0 | 140.7 |
| 2021 Q2 | 5,784 | 0 | 0 | 0.0 |
| 2021 Q1 | 7,217 | 2 | 0 | 277.1 |
| 2020 Q4 | 5,765 | 0 | 0 | 0.0 |
| 2020 Q3 | 5,401 | 2 | 0 | 370.3 |
| 2020 Q2 | 3,495 | 0 | 0 | 0.0 |
| 2020 Q1 | 5,048 | 5 | 0 | 990.5 |
| 2019 Q4 | 4,796 | 0 | 0 | 0.0 |
| 2019 Q3 | 5,562 | 0 | 0 | 0.0 |
| 2019 Q2 | 5,649 | 4 | 2 | 708.1 |
| 2019 Q1 | 4,701 | 0 | 0 | 0.0 |
| 2018 Q4 | 4,676 | 4 | 2 | 855.4 |
| 2018 Q3 | 5,476 | 0 | 0 | 0.0 |
| 2018 Q2 | 6,251 | 6 | 1 | 959.8 |
| 2018 Q1 | 5,628 | 0 | 0 | 0.0 |
| 2017 Q4 | 5,570 | 3 | 1 | 538.6 |
| 2017 Q3 | 5,308 | 0 | 0 | 0.0 |
| 2017 Q2 | 4,860 | 0 | 0 | 0.0 |
| 2017 Q1 | 4,784 | 2 | 0 | 418.1 |
| 2016 Q4 | 6,936 | 0 | 0 | 0.0 |
| 2016 Q3 | 4,748 | 3 | 0 | 631.8 |
| 2016 Q2 | 5,974 | 3 | 0 | 502.2 |
| 2016 Q1 | 6,923 | 0 | 0 | 0.0 |
| 2015 Q4 | 6,199 | 0 | 0 | 0.0 |
| 2015 Q3 | 6,787 | 2 | 0 | 294.7 |
| 2015 Q2 | 6,404 | 2 | 0 | 312.3 |
| 2015 Q1 | 4,951 | 0 | 0 | 0.0 |
| 2014 Q4 | 5,238 | 4 | 0 | 763.7 |
| 2014 Q3 | 5,957 | 3 | 1 | 503.6 |
| 2014 Q2 | 7,369 | 0 | 0 | 0.0 |
| 2014 Q1 | 8,063 | 0 | 0 | 0.0 |
| 2013 Q4 | 4,298 | 0 | 0 | 0.0 |
| 2013 Q3 | 7,932 | 1 | 0 | 126.1 |
| 2013 Q2 | 8,200 | 4 | 0 | 487.8 |
| 2013 Q1 | 5,331 | 0 | 0 | 0.0 |
| 2012 Q4 | 5,136 | 0 | 0 | 0.0 |
| 2012 Q3 | 6,533 | 0 | 0 | 0.0 |
| 2012 Q2 | 3,540 | 1 | 0 | 282.5 |
| 2012 Q1 | 1,931 | 1 | 0 | 517.9 |
| 2011 Q4 | 4,990 | 0 | 0 | 0.0 |
| 2011 Q3 | 5,846 | 0 | 0 | 0.0 |
| 2011 Q2 | 5,543 | 1 | 0 | 180.4 |
| 2011 Q1 | 4,783 | 0 | 0 | 0.0 |
| 2010 Q4 | 5,775 | 4 | 0 | 692.6 |
| 2010 Q3 | 5,362 | 0 | 0 | 0.0 |
| 2010 Q2 | 3,873 | 5 | 3 | 1291.0 |
| 2010 Q1 | 3,972 | 1 | 0 | 251.8 |
| 2009 Q4 | 4,988 | 0 | 0 | 0.0 |
| 2009 Q3 | 5,240 | 11 | 7 | 2099.2 |
| 2009 Q2 | 4,576 | 3 | 0 | 655.6 |
| 2009 Q1 | 6,726 | 0 | 0 | 0.0 |
| 2008 Q4 | 6,725 | 1 | 0 | 148.7 |
| 2008 Q3 | 9,288 | 0 | 0 | 0.0 |
| 2008 Q2 | 7,045 | 0 | 0 | 0.0 |
| 2008 Q1 | 8,470 | 3 | 1 | 354.2 |
| 2007 Q4 | 9,634 | 0 | 0 | 0.0 |
| 2007 Q3 | 11,528 | 0 | 0 | 0.0 |
| 2007 Q2 | 7,623 | 0 | 0 | 0.0 |
| 2007 Q1 | 9,405 | 0 | 0 | 0.0 |
| 2006 Q4 | 7,726 | 6 | 1 | 776.6 |
| 2006 Q3 | 7,828 | 0 | 0 | 0.0 |
| 2006 Q2 | 6,116 | 3 | 1 | 490.5 |
| 2006 Q1 | 7,733 | 0 | 0 | 0.0 |
| 2005 Q4 | 7,748 | 8 | 0 | 1032.5 |
| 2005 Q3 | 8,594 | 0 | 0 | 0.0 |
| 2005 Q2 | 7,496 | 4 | 1 | 533.6 |
| 2005 Q1 | 6,215 | 0 | 0 | 0.0 |
| 2004 Q4 | 4,003 | 3 | 0 | 749.4 |
| 2004 Q3 | 5,691 | 0 | 0 | 0.0 |
| 2004 Q2 | 7,511 | 7 | 1 | 932.0 |
| 2004 Q1 | 4,243 | 0 | 0 | 0.0 |
| 2003 Q4 | 3,588 | 9 | 2 | 2508.4 |
| 2003 Q3 | 3,707 | 0 | 0 | 0.0 |
| 2003 Q2 | 3,851 | 1 | 0 | 259.7 |
| 2003 Q1 | 3,994 | 0 | 0 | 0.0 |
| 2002 Q4 | 4,662 | 2 | 0 | 429.0 |
| 2002 Q3 | 5,352 | 0 | 0 | 0.0 |
| 2002 Q2 | 5,623 | 2 | 1 | 355.7 |
| 2002 Q1 | 4,835 | 0 | 0 | 0.0 |
| 2001 Q4 | 5,657 | 4 | 2 | 707.1 |
| 2001 Q3 | 5,677 | 0 | 0 | 0.0 |
| 2001 Q2 | 5,624 | 1 | 0 | 177.8 |
| 2001 Q1 | 4,672 | 0 | 0 | 0.0 |
| 2000 Q4 | 5,885 | 0 | 0 | 0.0 |
| 2000 Q3 | 6,567 | 0 | 0 | 0.0 |
| 2000 Q2 | 7,182 | 14 | 5 | 1949.3 |
| 2000 Q1 | 6,643 | 0 | 0 | 0.0 |
Reportable incidents
18 on file2023 · 1 incident
2018 · 2 incidents
Mud and water dripped into employees face and eyes causing eye to become agitated.
Employee was removing heavy part (u joint) from under loader. Once removed, it slipped from employees hand and fell to the ground pinching their finger between the part and the floor.
2016 · 1 incident
Rolled ankle on rock on the ground while walking through pit.
2011 · 2 incidents
No Miners involved. Early morning on 7/21/2011 private vehicle driving on private roads swerved off road, ran through 3 fences and into mine property. Vehicle hit berm at edge of pond. Both driver and passenger were taken from scene by ambulance. Before mine opened for the day. Was immediately reported to MSHA.
No Miners involved. Early morning on 7/21/2011 private vehicle driving on private roads swerved off road, ran through 3 fences and into mine property. Vehicle hit berm at edge of pond. Both driver and passenger were taken from scene by ambulance. Before mine opened for the day. Was immediately reported to MSHA.
2010 · 1 incident
While removing bearing on the head pulley of the feeder belt a piece of steel splintered off and lacerated employee's left forearm.
2009 · 1 incident
Employee was climbing up to get into a piece of equipment when he slipped down and hit his side on the equipment.
2007 · 1 incident
While employee was lowering a lift cylinder onto a loader, employee tried to line up the cylinder. His finger got caught/smashed between the cylinder and the loader. No property damage, could lose a portion on his right ring finger.
2006 · 1 incident
Employee dropped a 4 foot long piece of metal on top of left foot. Did not go to the doctor at the time. Went to doctor the next day, no treatment given. Continued to hurt, went back to doctor, off work from 12/3/06 to 12/6/06, back to work 12-6-06 went on light duty til 2/6/06, then off work til 2/26/07, then back full time
2005 · 2 incidents
Employee was dismounting a forklift when he slipped & grabbed the roll bar. Wrenched his left shoulder. Initially it was just reported as an incident. Didn't seek medical attention until 6/27/05(from 2200602400092 2/5'd). Returned to work & then went off 7/18/05 with same injury - went for surgery. Returned 1/9/06
EE WAS WALKING UNDER A CONVEYOR WHILE PAINTING IT. HE STEPPED ON SOME UNEVEN GROUND AND FELL, HURTING HIS ANKLE.
2001 · 2 incidents
FALL
CARRYING MATERIAL WITH CO-WORKER. CO-WORKER SLIPPED, JERKING MATERIAL OUT OF HAND.
2000 · 2 incidents
HITTING STEEL WEDGE WITH SLEDGE HAMMER. PIECE BROKE OFF, HITTING EYE. WEARING GOGGLES AT TIME.
LIFTING MOTOR. MOTOR SLIPPED, LANDING ON FINGER.
1999 · 1 incident
ROLLED ANKLE STEPPING DOWN FROM CATWALK.
1990 · 1 incident
INJURED PERSON WAS ATTEMPTINE TO INSTALL 120 BL. BELT OVERHEAD. WEIGHT BECAME EXCESSIVE EINEL WHILE TURNING AWKWARELY, INJURED BACK.
The full compliance file on Thun Field Pit
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.