Employee Injured back changing screens approximately one month ago and reported to HR on 6/13/2026 that EE wanted to file for work comp. This was the first that the company was notified of the injury.
Thompson Mine Metal/Non-Metal
Thompson Mine has $199K in proposed MSHA penalties and $2K outstanding across 6 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 44
- Years on record
- 1985–2026
- Latest incident
- Jun 2026
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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.Thompson Mine has $199K in proposed MSHA penalties and $2K outstanding across 6 contested dockets.
ⓘ
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 | 18,049 | 9 | 0 | 498.6 |
| 2025 Q3 | 22,850 | 0 | 0 | 0.0 |
| 2025 Q2 | 22,675 | 5 | 0 | 220.5 |
| 2025 Q1 | 15,919 | 6 | 1 | 376.9 |
| 2024 Q4 | 19,283 | 1 | 0 | 51.9 |
| 2024 Q3 | 20,262 | 1 | 1 | 49.4 |
| 2024 Q2 | 19,660 | 6 | 0 | 305.2 |
| 2024 Q1 | 18,146 | 2 | 2 | 110.2 |
Show 96 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 21,685 | 30 | 7 | 1383.4 |
| 2023 Q3 | 21,377 | 1 | 0 | 46.8 |
| 2023 Q2 | 20,213 | 17 | 6 | 841.0 |
| 2023 Q1 | 18,715 | 0 | 0 | 0.0 |
| 2022 Q4 | 18,498 | 9 | 3 | 486.5 |
| 2022 Q3 | 18,818 | 0 | 0 | 0.0 |
| 2022 Q2 | 16,684 | 8 | 0 | 479.5 |
| 2022 Q1 | 12,981 | 0 | 0 | 0.0 |
| 2021 Q4 | 15,597 | 11 | 4 | 705.3 |
| 2021 Q3 | 15,285 | 1 | 0 | 65.4 |
| 2021 Q2 | 14,063 | 63 | 11 | 4479.8 |
| 2021 Q1 | 12,813 | 19 | 3 | 1482.9 |
| 2020 Q4 | 13,724 | 0 | 0 | 0.0 |
| 2020 Q3 | 14,541 | 0 | 0 | 0.0 |
| 2020 Q2 | 14,794 | 10 | 2 | 675.9 |
| 2020 Q1 | 15,986 | 0 | 0 | 0.0 |
| 2019 Q4 | 17,123 | 18 | 3 | 1051.2 |
| 2019 Q3 | 20,331 | 1 | 1 | 49.2 |
| 2019 Q2 | 15,044 | 9 | 2 | 598.2 |
| 2019 Q1 | 13,976 | 13 | 1 | 930.2 |
| 2018 Q4 | 12,830 | 1 | 0 | 77.9 |
| 2018 Q3 | 15,273 | 15 | 1 | 982.1 |
| 2018 Q2 | 15,211 | 0 | 0 | 0.0 |
| 2018 Q1 | 11,329 | 2 | 0 | 176.5 |
| 2017 Q4 | 12,451 | 0 | 0 | 0.0 |
| 2017 Q3 | 14,040 | 8 | 1 | 569.8 |
| 2017 Q2 | 16,941 | 0 | 0 | 0.0 |
| 2017 Q1 | 14,093 | 5 | 0 | 354.8 |
| 2016 Q4 | 9,522 | 0 | 0 | 0.0 |
| 2016 Q3 | 9,417 | 8 | 2 | 849.5 |
| 2016 Q2 | 14,703 | 0 | 0 | 0.0 |
| 2016 Q1 | 11,471 | 3 | 0 | 261.5 |
| 2015 Q4 | 13,583 | 0 | 0 | 0.0 |
| 2015 Q3 | 14,483 | 7 | 1 | 483.3 |
| 2015 Q2 | 14,675 | 0 | 0 | 0.0 |
| 2015 Q1 | 9,855 | 6 | 1 | 608.8 |
| 2014 Q4 | 11,496 | 0 | 0 | 0.0 |
| 2014 Q3 | 14,273 | 15 | 6 | 1050.9 |
| 2014 Q2 | 13,806 | 0 | 0 | 0.0 |
| 2014 Q1 | 9,132 | 8 | 4 | 876.0 |
| 2013 Q4 | 11,334 | 0 | 0 | 0.0 |
| 2013 Q3 | 13,797 | 7 | 3 | 507.4 |
| 2013 Q2 | 11,463 | 0 | 0 | 0.0 |
| 2013 Q1 | 9,669 | 3 | 2 | 310.3 |
| 2012 Q4 | 13,417 | 0 | 0 | 0.0 |
| 2012 Q3 | 16,472 | 5 | 0 | 303.5 |
| 2012 Q2 | 15,156 | 0 | 0 | 0.0 |
| 2012 Q1 | 11,314 | 7 | 0 | 618.7 |
| 2011 Q4 | 14,713 | 0 | 0 | 0.0 |
| 2011 Q3 | 12,854 | 0 | 0 | 0.0 |
| 2011 Q2 | 12,259 | 0 | 0 | 0.0 |
| 2011 Q1 | 7,927 | 12 | 5 | 1513.8 |
| 2010 Q4 | 10,402 | 0 | 0 | 0.0 |
| 2010 Q3 | 13,025 | 0 | 0 | 0.0 |
| 2010 Q2 | 12,595 | 5 | 0 | 397.0 |
| 2010 Q1 | 8,406 | 3 | 0 | 356.9 |
| 2009 Q4 | 11,447 | 0 | 0 | 0.0 |
| 2009 Q3 | 16,224 | 8 | 3 | 493.1 |
| 2009 Q2 | 13,038 | 0 | 0 | 0.0 |
| 2009 Q1 | 3,423 | 7 | 1 | 2045.0 |
| 2008 Q4 | 13,873 | 0 | 0 | 0.0 |
| 2008 Q3 | 13,729 | 8 | 3 | 582.7 |
| 2008 Q2 | 15,878 | 0 | 0 | 0.0 |
| 2008 Q1 | 13,263 | 4 | 0 | 301.6 |
| 2007 Q4 | 13,645 | 0 | 0 | 0.0 |
| 2007 Q3 | 13,731 | 0 | 0 | 0.0 |
| 2007 Q2 | 13,159 | 8 | 2 | 607.9 |
| 2007 Q1 | 8,952 | 10 | 3 | 1117.1 |
| 2006 Q4 | 13,154 | 3 | 2 | 228.1 |
| 2006 Q3 | 14,319 | 10 | 4 | 698.4 |
| 2006 Q2 | 15,342 | 0 | 0 | 0.0 |
| 2006 Q1 | 11,223 | 1 | 1 | 89.1 |
| 2005 Q4 | 13,187 | 0 | 0 | 0.0 |
| 2005 Q3 | 15,881 | 0 | 0 | 0.0 |
| 2005 Q2 | 15,741 | 6 | 0 | 381.2 |
| 2005 Q1 | 9,956 | 0 | 0 | 0.0 |
| 2004 Q4 | 11,523 | 3 | 1 | 260.3 |
| 2004 Q3 | 12,260 | 18 | 7 | 1468.2 |
| 2004 Q2 | 12,179 | 4 | 1 | 328.4 |
| 2004 Q1 | 6,894 | 4 | 0 | 580.2 |
| 2003 Q4 | 13,062 | 0 | 0 | 0.0 |
| 2003 Q3 | 12,641 | 1 | 1 | 79.1 |
| 2003 Q2 | 11,384 | 4 | 0 | 351.4 |
| 2003 Q1 | 8,524 | 0 | 0 | 0.0 |
| 2002 Q4 | 12,860 | 2 | 0 | 155.5 |
| 2002 Q3 | 14,486 | 5 | 2 | 345.2 |
| 2002 Q2 | 14,830 | 0 | 0 | 0.0 |
| 2002 Q1 | 8,751 | 9 | 3 | 1028.5 |
| 2001 Q4 | 12,387 | 0 | 0 | 0.0 |
| 2001 Q3 | 13,516 | 0 | 0 | 0.0 |
| 2001 Q2 | 14,252 | 0 | 0 | 0.0 |
| 2001 Q1 | 8,523 | 0 | 0 | 0.0 |
| 2000 Q4 | 11,481 | 5 | 1 | 435.5 |
| 2000 Q3 | 11,630 | 0 | 0 | 0.0 |
| 2000 Q2 | 15,590 | 0 | 0 | 0.0 |
| 2000 Q1 | 9,930 | 0 | 0 | 0.0 |
Reportable incidents
44 on file2026 · 1 incident
2025 · 1 incident
Miner injured middle finger of right hand between tailgate and bed of a dump truck.
2023 · 3 incidents
Employee developed redness on skin in the area where their respirator fits around the employee's nose. The employee went to the doctor, and was diagnosed as having "unspecified contact dermatitis, unspecified cause". The employee was prescribed a topical steroid cream and returned to work without restrictions.
Employee was removing a broken bag from the air bagger turntable when the bag broke further causing the employee to hit EE's right hand off the guard. The guard is covered with foam and rubber. The medical paperwork from the doctor was received by management on 9/11/2023. The employee is on light duty due to a strain to right hand and thumb. Medical follow up scheduled for 9/19/23.
A truck driver from a trucking co that's a subsidiary of R.W. Sidley was loading sand at RW Sidley's dry plant when the driver tripped on a 2x4 that was partially covered in sand and landed on knee. The incident was not reported until 2/21/23. The mine was notified on 2/27/23 that the driver had sought medical attention and this had become a reportable incident.
2022 · 1 incident
During a period of heavy rainfall the drains within the bagging room became overwhelmed with water. A miner working in this area was walking through the water when they stepped on some loose gravel causing the miner to slip and fall. The miner suffered right rib contusions and contusions on their right arm and right leg.
2021 · 1 incident
Plowed snow turned into ice. When the operator walked out of the plant the operator slipped on the ice and sprained EE's ankle.
2020 · 1 incident
Employee was walking away from the fuel pump when they slipped on ice and landed on a shoulder. Employee went to the doctor in December and began physical therapy at the end of January (18 visits). Employee went for a second opinion and was put on restricted duty (4/28/21).
2018 · 5 incidents
Employee was removing a pipe from the manifold. EE felt a pop in shoulder. Employee continued to work under normal conditions with no restrictions from doctor exam on 12/10/18. On 12/26, employee had an MRI conducted. Results came in on 1/10/19 that has now diagnosed a shoulder injury and restrictions have been implemented by doctor.
One of the sand chutes was becoming clogged with material in the north crusher. The employee was using the clearing tool to clear the material. As the employee was clearing the chute, EE struck finger between the tool and the chute frame.
EE reviewed customers paperwork for a pickup. EE let the driver know to enter the center of the building. As the EE was stepping back onto the lift truck, the truck driver entered the building at an angle, allowing the trailer to catch the lift truck dragging it into and pinning lift truck at the building and the trailer. EE hit shoulder and knee on the frame of the lift truck.
At the end of the day, the employee stepped out of the loader carrying lunch box. When EE stepped out, EE slipped on the icy platform on the loader. EE was able to grab the handle but struck left side on the machine, fracturing two ribs. Cold temperatures, rain and ice was forming throughout the day.
Contractor turned portable belt sander on as they turned the sander on its side, their finger became caught in between the rotating belt guide on the sander, creating an avulsion to left hand index finger and tip.
2008 · 1 incident
During the repair of a pulley, right middle finger got pinched between the pulley bearing and the frame work.
2006 · 1 incident
Stepping down off of a haul truck and pulled a muscle in right leg.
2005 · 1 incident
Victom was attempting to hang a curtin on a chute at a moving conveyor tail section. He got his hand pinched between the moving conveyor and a troughing roller injuring the first two fingers on the left hand.
2004 · 3 incidents
Was climbing down out of a truck. Twisted right ankle on contact with ground.
Removing a cover plate on carryall trailer when it slipped and came down on left hand causing a deep cut on third finger. Onsite first aid rendered and then transported to clinic where he received 3 stitches.
Employee was climbing up onto his truck and strained the calf muscle on his right leg.
2003 · 3 incidents
Employee operating crusher and twisted his back while shoveling a bin.
PULLING FLIGHT INTO DRUM-FELL ONTO RIGHT HAND-LACERATION OF MIDDLE FINGER-REQUIRED STITCHES.
CHECKING 480 LINE, AS TESTING LEAD WIRES ON TESTER WERE IN WRONG POSITION RESULTING IN TESTER IMPLODING CAUSING BURNS TO HAND & FINGERS.
2002 · 3 incidents
SET UP LADDER TO GO INSIDE #3 BIN - LOST BALANCE AND FELL.
FILLING 400 BIN, FOOT GOT STUCK. DID NOT BREAK FALL. HIT WALL, SPLIT LIP, LOST A TOOTH, PAIN IN NECK.
EMPLOYEE STEPPED ON A BOARD FROM A PALLET THAT HAD A NAIL STICKING OUT/ UP.
2001 · 2 incidents
FELL OFF MACHINE AMD INTO TRUCK TOOL BOX.
HELPING PLACE A PULLEY ON THE CRUSHER AND TWISTED KNEE, KNEE POPPED OUT.
2000 · 1 incident
EE CUT FINGER ON THE VALVE WHERE THE BAG IS PLACED FOR THE MINED MATERIALS.
1999 · 4 incidents
EMPLOYEE WAS CHAINING DOWN A LOAD ON A TRAIELR WHEN THE CHAIN BINDER SLIPPED AND HIT HIM IN THE FACE (LEFT EYEBROW).
DRIVING A PIT TRUCK TO PICK UP A LOAD AND THE BOX DID NOT GO ALL THE WAY DOWN. EE DID NOT NOTICE THAT IT WAS STILL PARTIALLY RAISED AND HE DROVE UNDER AN OVERPASS AND HIT IT. HE HIT HIS HEAD, KNEES, AND RIGHT WRIST.
EE WAS WORKING IN THE BNAGGING ROOM, FILLING A SACK OF MATERIAL FOR AN ORDER, WHEN A ROCK PARTICLE WENT INTO HIS RIGHT EYE.
EE WAS LIFTING (WITH ASSISTANCE) A LARGE BAG OF SAND OF A TRAILER WITH A RAMP. EE ATTEMPTED TO CLOSE DOOR ON TRAILER WHEN RAMP SWUNG AROUND HITTING HIS LEFT HEEL AND KNOCKING HIM DOWN.
1998 · 2 incidents
BILATERAL CARPAL TUNNEL SYNDROME. PAIN IN BOTH HANDS AND ARMS, LOWER BACK PAIN, SHOULDER PAIN, NECK PAIN. DUE TO OPERATING HEAVY EQUIPMENT FOR MANY YEARS.
EE WAS CLEANING OLD BAGGING MACHINE AND A METAL PLATE FELL AND SMASHED HIS RIGHT PINKY FINGER.
1996 · 1 incident
EMP CALLED OTHER PLANT OPERATOR THAT CRANE CHAINDRIVE WAS SLIPPING. OTHER EMP SAID TO WAIT FOR HELP. EMP ELECTED TO WORK ON IT HIMSELF. REMOVED GUARD AND APPARENTLY DID SOMETHING THAT CAUSED I NJURY TO HIS LEFT FINGERS.
1994 · 2 incidents
THE EMPLOYE EWAS IN THE PROCESS OF STEPPING ONTO THE STEP OF A MAN LIFT TO GO DOWN. THHE MAN LIFT STEP WAS NOT ALIGNED WITH THE FLOOR. THE EMPLOYEE STEPPED DOWN ONTO THE STEP AND IN THE PRO CESS TWISTED HIS RIGHT KNEE. IMPAIRMENT SLIGHT.Y HE STAYED HOME FOLLOWING DAY BUT RETURNED TO HSI REGULAR JOB THE NEXT DAY. DID NOT GO TO THE DR.
WALKING DOWN STAIRS SLIPPED ON ICE EMPLOYEE PUT HAND OUT TO CATCH HIMSELF REINJURED PREVIOUS DISLOCATION
1992 · 2 incidents
EE WAS GETTING OFF OF A SMALL FORK LIFT FROM THE DRIVER'S SEAT. HIS WINTER BOOT GOT CAUGHT BY THE OPEN DOOR-WAY AREA AND HE FELL FORWARD TO THE FLOOR. HE PUT OUT HIS HANDS TO CATCH HIMSELF. HE SUSTAINED A HAIRLINE FRACTURE OF THE LEFT WRIST
USING A V-BELT AS A CHOKER AND A COME-ALONG, ONE END OF THE PIPE WAS RAISED UNTIL IT STRUCK AGAINS5T THE BOTTOM OF THE 3RD FLOOR. EE PULLED UP AND OUT ON THE LOWER END OF THE PIPE OT FREE THE UPPER END WHILE OTHER EMPLOYEE TIGHTENED THE COME-ALONG. THE PIPE COULDNT BE MOVED OUT ENOUGH TO ALLOW THE UPPER END TO CLEAR THE 3RD FLOOR. EE SAT THE PIPE ON THE FLOOR AT WHICH TIME THE V-BE
1990 · 1 incident
EMPLOYEE WAS ATTEMPTING TO LOOSEN A ROCK WEDGED IN THE CRUSHER BY USING A LONG METAL BAR. THE BAR SLIPPED CAUSING HIM TO STRAIN HIS BACK WHILE HANGING ONTO THE BAR.
1989 · 1 incident
CLEANING FROZEN PEBBLE OUT OF HOPPER, SHOVELING AND LOOSEN MATERIAL JAMMING BAR IN IT IMPAIRMENT LIMITED TO SHOULDER MUSCLE STRAIN.
1988 · 2 incidents
JUMPING ON BOXES TO CRUSH THEM.LOST BALANCE AND FELL BACKWARD.PUT HAND BACK TO BCATCH HIS FALL.STRUCK HANDS ON FLOOR AND FX LEFT WRIST.
LOADING DUMP TRUCK FROM OVERHEAD BIN,THE PIPE EXTENSION OF THE GATE HANDLE SLIPPED OFF THE SIDE OF DUMP BED CAUSING HIM TO FASLL DOWN.HE CAUGHT HIMSELF BY GRABBING ONTO THE TOP OF BED.TWISTED LEFT KNEE HIT STOMACH AND STRAINED RIGHT GROIN.
1985 · 1 incident
LIFTING 100# BAG OF SAND TO PALLET SLIPPED-LANDED ON LEFT KNEE AND TWISTED UPPER & LOWER BACK
The full compliance file on Thompson Mine
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.