Employee utilized an air hammer to free a stuck part when part of the tooling broke off and punctured their arm.
Troy Grove Stone Quarry (MC46): 183 MSHA citations Metal/Non-Metal
Troy Grove Stone Quarry (MC46) has $30K in proposed MSHA penalties and $0 outstanding across 8 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 36
- Years on record
- 1988–2025
- Latest incident
- Jun 2025
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Troy Grove Stone Quarry (MC46) has $30K in proposed MSHA penalties and $0 outstanding across 8 contested dockets.
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.ⓘ
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.ⓘ
Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.- Settled 10 · 67%
- Vacated or withdrawn 5 · 33%
ⓘ
Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.ⓘ
A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.| Docket | Decision | Judge | Year | Proposed / upheld |
|---|---|---|---|---|
| LAKE 2012-760M | Settlement | Lewis | 2015 | $5K → $4K |
| LAKE 2010-125M | Settlement | Lesnick | 2010 | $592 → $592 |
| LAKE 2022-0116 | Settlement | Paez | 2022 | $563 → $133 |
| LAKE 2025-0067 | Vacate | Lewis | 2025 | $441 → $147 |
| LAKE 2011-219M | Settlement | Lesnick | 2011 | $308 → $100 |
| LAKE 2012-551M | Settlement | Lesnick | 2013 | $300 → $200 |
ⓘ
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.Metal and nonmetal contaminants (personal samples)
ⓘ
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.
Last sampled: 2025-09-30
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Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.- Quartz, respirable, >1% Qtz5
- Respirable dust, <.1mg4
- Nuisance dust, respirable, <1% Qtz1
Show the individual readings (10)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2025-09-30 | Respirable dust, <.1mg | 0 | Screen/Scalper Operator | ||
| 2025-09-30 | Respirable dust, <.1mg | 0 | Washer Operator | ||
| 2010-10-19 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2010-10-19 | Nuisance dust, respirable, <1% Qtz | 0.27 | 10 | 0.03 | Washer Operator |
| 2010-10-19 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2010-10-19 | Quartz, respirable, >1% Qtz | 0.42 | 2.3 | 0.18 | Crusher Oper/Worker |
| 2010-10-19 | Quartz, respirable, >1% Qtz | 0.81 | 3.12 | 0.26 | Mechanic |
| 2002-03-12 | Quartz, respirable, >1% Qtz | 1.37 | 2.46 | 0.56 | Utility Man |
| 2002-03-12 | Quartz, respirable, >1% Qtz | 1.1 | 2.64 | 0.42 | Utility Man |
| 2002-03-12 | Quartz, respirable, >1% Qtz | 0.38 | 2.05 | 0.19 | Drill Operator, Rotary |
Troy Grove Stone Quarry (MC46) recorded 0.00 reportable injury cases per 100 full-time workers in 2025.
ⓘ
This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.| Year | total case rate | days-away | fatal |
|---|---|---|---|
| 2025 * | 0.00 | 0.00 | 0.000 |
| 2024 * | 7.05 | 7.05 | 0.000 |
| 2023 * | 7.80 | 7.80 | 0.000 |
| 2022 * | 18.38 | 18.38 | 0.000 |
| 2012 * | 15.89 | 15.89 | 0.000 |
| 2011 * | 14.80 | 14.80 | 0.000 |
| 2010 * | 6.19 | 0.00 | 0.000 |
| 2009 * | 5.65 | 5.65 | 0.000 |
- RiverStone Group Inc 1987 to present
| Year | Employees |
|---|---|
| 2026 | 16 |
| 2025 | 13 |
| 2024 | 13 |
| 2023 | 15 |
| 2022 | 12 |
| 2021 | 10 |
| 2020 | 10 |
| 2019 | 10 |
| 2018 | 8 |
| 2017 | 6 |
| 2016 | 9 |
| 2015 | 9 |
| 2014 | 10 |
| 2013 | 11 |
| 2012 | 14 |
| 2011 | 12 |
| 2010 | 14 |
| 2009 | 15 |
| 2008 | 17 |
| 2007 | 18 |
| 2006 | 19 |
| 2005 | 19 |
| 2004 | 16 |
| 2003 | 18 |
| 2002 | 19 |
| 2001 | 19 |
| 2000 | 17 |
Troy Grove Stone Quarry (MC46) sits in LaSalle County, Illinois, where the Census mining category is 1.0% of county employment.
ⓘ
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.ⓘ
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 |
|---|---|---|---|---|
| 2026 Q2 | 10,363 | 0 | 0 | 0.0 |
| 2026 Q1 | 7,547 | 0 | 0 | 0.0 |
| 2025 Q4 | 7,163 | 5 | 0 | 698.0 |
| 2025 Q3 | 7,446 | 0 | 0 | 0.0 |
| 2025 Q2 | 7,825 | 1 | 0 | 127.8 |
| 2025 Q1 | 5,297 | 0 | 0 | 0.0 |
| 2024 Q4 | 6,365 | 2 | 1 | 314.2 |
| 2024 Q3 | 8,432 | 4 | 0 | 474.4 |
Show 98 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 8,074 | 0 | 0 | 0.0 |
| 2024 Q1 | 5,491 | 0 | 0 | 0.0 |
| 2023 Q4 | 6,815 | 0 | 0 | 0.0 |
| 2023 Q3 | 8,430 | 6 | 1 | 711.7 |
| 2023 Q2 | 7,558 | 0 | 0 | 0.0 |
| 2023 Q1 | 2,852 | 0 | 0 | 0.0 |
| 2022 Q4 | 4,345 | 3 | 1 | 690.4 |
| 2022 Q3 | 7,406 | 2 | 0 | 270.1 |
| 2022 Q2 | 6,435 | 5 | 2 | 777.0 |
| 2022 Q1 | 3,575 | 5 | 0 | 1398.6 |
| 2021 Q4 | 4,307 | 0 | 0 | 0.0 |
| 2021 Q3 | 5,221 | 2 | 0 | 383.1 |
| 2021 Q2 | 5,505 | 0 | 0 | 0.0 |
| 2021 Q1 | 4,375 | 1 | 0 | 228.6 |
| 2020 Q4 | 4,184 | 0 | 0 | 0.0 |
| 2020 Q3 | 4,992 | 0 | 0 | 0.0 |
| 2020 Q2 | 4,766 | 3 | 0 | 629.5 |
| 2020 Q1 | 4,174 | 0 | 0 | 0.0 |
| 2019 Q4 | 4,121 | 1 | 0 | 242.7 |
| 2019 Q3 | 4,378 | 1 | 1 | 228.4 |
| 2019 Q2 | 3,038 | 0 | 0 | 0.0 |
| 2019 Q1 | 2,363 | 1 | 1 | 423.2 |
| 2018 Q4 | 4,529 | 0 | 0 | 0.0 |
| 2018 Q3 | 2,215 | 1 | 0 | 451.5 |
| 2018 Q2 | 1,555 | 1 | 0 | 643.1 |
| 2018 Q1 | 1,658 | 1 | 0 | 603.1 |
| 2017 Q4 | 1,485 | 0 | 0 | 0.0 |
| 2017 Q3 | 1,253 | 0 | 0 | 0.0 |
| 2017 Q2 | 3,167 | 0 | 0 | 0.0 |
| 2017 Q1 | 3,810 | 0 | 0 | 0.0 |
| 2016 Q4 | 3,968 | 1 | 0 | 252.0 |
| 2016 Q3 | 4,253 | 2 | 1 | 470.3 |
| 2016 Q2 | 4,098 | 0 | 0 | 0.0 |
| 2016 Q1 | 3,583 | 0 | 0 | 0.0 |
| 2015 Q4 | 3,954 | 1 | 0 | 252.9 |
| 2015 Q3 | 4,258 | 6 | 1 | 1409.1 |
| 2015 Q2 | 3,910 | 1 | 0 | 255.8 |
| 2015 Q1 | 3,362 | 0 | 0 | 0.0 |
| 2014 Q4 | 3,969 | 0 | 0 | 0.0 |
| 2014 Q3 | 4,064 | 0 | 0 | 0.0 |
| 2014 Q2 | 3,546 | 0 | 0 | 0.0 |
| 2014 Q1 | 1,782 | 0 | 0 | 0.0 |
| 2013 Q4 | 4,644 | 0 | 0 | 0.0 |
| 2013 Q3 | 5,258 | 1 | 0 | 190.2 |
| 2013 Q2 | 5,319 | 0 | 0 | 0.0 |
| 2013 Q1 | 3,996 | 2 | 0 | 500.5 |
| 2012 Q4 | 6,214 | 0 | 0 | 0.0 |
| 2012 Q3 | 6,207 | 1 | 1 | 161.1 |
| 2012 Q2 | 6,860 | 0 | 0 | 0.0 |
| 2012 Q1 | 5,890 | 5 | 1 | 848.9 |
| 2011 Q4 | 6,721 | 0 | 0 | 0.0 |
| 2011 Q3 | 7,659 | 0 | 0 | 0.0 |
| 2011 Q2 | 7,125 | 0 | 0 | 0.0 |
| 2011 Q1 | 5,527 | 0 | 0 | 0.0 |
| 2010 Q4 | 7,488 | 10 | 2 | 1335.5 |
| 2010 Q3 | 9,981 | 0 | 0 | 0.0 |
| 2010 Q2 | 8,393 | 1 | 0 | 119.1 |
| 2010 Q1 | 6,452 | 5 | 1 | 775.0 |
| 2009 Q4 | 9,225 | 0 | 0 | 0.0 |
| 2009 Q3 | 9,588 | 3 | 1 | 312.9 |
| 2009 Q2 | 8,774 | 0 | 0 | 0.0 |
| 2009 Q1 | 7,787 | 0 | 0 | 0.0 |
| 2008 Q4 | 8,311 | 0 | 0 | 0.0 |
| 2008 Q3 | 10,908 | 0 | 0 | 0.0 |
| 2008 Q2 | 11,798 | 0 | 0 | 0.0 |
| 2008 Q1 | 9,184 | 0 | 0 | 0.0 |
| 2007 Q4 | 12,687 | 0 | 0 | 0.0 |
| 2007 Q3 | 12,343 | 0 | 0 | 0.0 |
| 2007 Q2 | 12,721 | 0 | 0 | 0.0 |
| 2007 Q1 | 11,639 | 0 | 0 | 0.0 |
| 2006 Q4 | 12,107 | 5 | 0 | 413.0 |
| 2006 Q3 | 11,309 | 0 | 0 | 0.0 |
| 2006 Q2 | 12,366 | 0 | 0 | 0.0 |
| 2006 Q1 | 10,488 | 4 | 0 | 381.4 |
| 2005 Q4 | 10,607 | 0 | 0 | 0.0 |
| 2005 Q3 | 12,800 | 0 | 0 | 0.0 |
| 2005 Q2 | 12,102 | 0 | 0 | 0.0 |
| 2005 Q1 | 9,041 | 0 | 0 | 0.0 |
| 2004 Q4 | 10,707 | 0 | 0 | 0.0 |
| 2004 Q3 | 11,342 | 0 | 0 | 0.0 |
| 2004 Q2 | 8,792 | 0 | 0 | 0.0 |
| 2004 Q1 | 5,911 | 0 | 0 | 0.0 |
| 2003 Q4 | 11,542 | 0 | 0 | 0.0 |
| 2003 Q3 | 10,660 | 0 | 0 | 0.0 |
| 2003 Q2 | 11,475 | 27 | 2 | 2352.9 |
| 2003 Q1 | 7,349 | 0 | 0 | 0.0 |
| 2002 Q4 | 12,944 | 0 | 0 | 0.0 |
| 2002 Q3 | 12,797 | 8 | 0 | 625.1 |
| 2002 Q2 | 13,516 | 0 | 0 | 0.0 |
| 2002 Q1 | 12,409 | 11 | 3 | 886.5 |
| 2001 Q4 | 12,161 | 0 | 0 | 0.0 |
| 2001 Q3 | 11,608 | 0 | 0 | 0.0 |
| 2001 Q2 | 12,204 | 11 | 2 | 901.3 |
| 2001 Q1 | 10,036 | 0 | 0 | 0.0 |
| 2000 Q4 | 11,250 | 2 | 1 | 177.8 |
| 2000 Q3 | 12,990 | 4 | 2 | 307.9 |
| 2000 Q2 | 7,167 | 0 | 0 | 0.0 |
| 2000 Q1 | 10,955 | 0 | 0 | 0.0 |
Reportable incidents
36 on file2025 · 1 incident
2024 · 1 incident
Employee alleges employee was climbing down from a loader and employee's footing got caught on the catwalk and employee twisted right ankle.
2023 · 1 incident
Employee alleges they were moving cable wires off of a truck and they heard their left shoulder pop.
2022 · 2 incidents
Employee alleges the day before they were rolling some belting around but they didn't feel any pain until the next day employee wasn't sure if they injured themselves at work. Later after seeking medical attention they stated they did hurt their lower back at work. This is late reporting do to just receiving Dr. notes.
Employee alleges employee was removing a drive belt guard on a screen and it popped out and struck employee in right arm and smashing employee's middle finger. Employee received stitches in arm. *Employee had surgery on Nov 14, 2022 and is losing time and is still off work.
2021 · 2 incidents
Employee alleges they were walking along side of the log feed and they stepped on some rocks twisting left knee.
Employee alleges EE was taking a handrail off using a wrench and the wrench slip off a bolt hitting EE in the nose. Late Reporting due to the employee said EE's nose wasn't fractured. The Dr. notes came in on 09/03/21 and the notes stated EE had a nasal fracture.
2020 · 1 incident
Employee alleges was using a prybar to remove a large rock from the conveyor, As EE was using the prybar, the rock got caught and cut EE's rt. middle finger. Employee did seek medical attention but was released. EE went back for medical treatment again on 10/15/20. A procedure was performed on EE's finger and EE is losing time as of 10/15/20.
2017 · 1 incident
Employee alleges was hooking a chain to a loader bucket and as EE turned to walk away left foot slipped into some mud, wet clay and rocks hurting left knee. Employee just seek medical attention on 4-19-17 and has some restrictions. We can accommodate the restrictions. This employee isn't losing anytime.
2013 · 1 incident
EE alleges he was removing bolts from the wash screen with a driver guard and he turned to switch positions and he twisted his right knee.
2012 · 2 incidents
Employee alleges another employee stepped on a trailer ball and slipped off and ran into him knocking him down. He hurt his left shoulder and his arm. Employee started losing time on 12/07/12. Late reporting due to just received Dr. notes on 01/10/2013.
Employee alleges he was walking and he slipped on some ice hurting his right wrist. We just received Dr. notes stating employee is loosing time as of 02/28/12 and is wearing a splint.
2011 · 2 incidents
Employee alleges he was driving loader to the crusher to haul rock and the loader jerked causing him to twist his lower back. We were just notified on 11-08-11 that he was going to be receiving his first epidural steroid injection. Depending on how he feels he could receive more. The employee is not loosing any time.
Employee alleges he was placing blowbars in crusher and the rotar got stuck snapping the bar while his arm was still holding it causing a strain to his right elbow.
2010 · 1 incident
Employee alleges he was walking down a small incline and he slipped on some rocks and he caught himself with his left hand. Just receive Dr. notes and this is reportable because he is to wear a splint on his left wrist just for protection.
2009 · 1 incident
Employee alleges he was loosening bolts on a blowbar with a impact gun and the bolts came loose pinning his hand between the crusher and impact gun bruising his left hand. *Late reporting due to employee was just scheduled for surgery on 12-18-09 and will start loosing time then.
2007 · 1 incident
Employee alleges he was trying to roll logs in the washer; prybar slipped and cut his chin. He received 3 stitches.
2003 · 1 incident
EMPLOYEE ALLEGES SHE WAS TRIMMING BUSHES AND THE HEDGE CLIPPER SLIPPED AND CUT HER LEFT POINTER FINGER.
2002 · 2 incidents
EE ALLEGES HE WAS LOWERING WIRE OVER HIGH WALL, THE WIRE FLEW OUT OF CONTROL & HIT HIS WRIST.
EE ALLEGES HE WAS PUTTING STRAPS ON A PIECE OF PIPE AND AS HE LIFTED ONE END OF THE PIPE HE FELT A POP IN HIS LT. SHOULDER.
2001 · 1 incident
EMPLOYEE ALLEGES HE WAS CUTTING A PIECE OF THE CONVEYOR BELT WITH A KNIFE AND IT SLIPPED AND CUT HIM ON HIS RIGHT LEG.
2000 · 1 incident
EE ALLEGES HE WAS PUSHING AND PULLING TRYING TO ALIGN THE CONVEYOR UP AND HE STARTED FEELING PAIN IN HIS BACK AND RIGHT LEG.
1999 · 1 incident
EE ALLEGES SHE BENT OVER TO PICK UP A BOX OF SCALE TICKETS OUT OF THE BOTTOM CABINET AND SHE HEARD HER BACK POPP AND SHE COULDN'T STAND UP.
1997 · 1 incident
EE ALLEGES HE WAS PULLING DOWN BINDER TO TIGHTEN CHAINS ON LOAD, BINDER DID NOT SNAP SHUT, IT SPRUNG OPEN AND CUT HIM ABOVE RIGHT EYE.
1995 · 1 incident
EE WAS STEPPING DOWN OFF OF MACHINE WHEN HE SLIPPED AND HIT HIS ELBOW.
1994 · 1 incident
EE HAD JUST PARKED THE MICH 320 LOADER BY THE BULK FUEL TANK AND HAD JUST CLIMBED DOWN THE LOADER ONTO THE FUELD TANK BERM WHEN HE LOST HIS FOOTING AND SLIPPED DOWN.
1993 · 2 incidents
EMPLOYEE BENTO OVER & WAS REMOVING A DRILL HOLE PLUG WHEN HE FELT A SHARP PAIN IN HIS LOWER BACK.
EMPLOYEE BENT OVER TO PICK UP A LOADER BUCKET EDGE PROTECTOR AND AS HE DID HIS BACK PULLED AND HE FELT A SHARP PAIN IN THE LOWER BACK.
1992 · 3 incidents
EMPLOYEE WAS REMOVING A 25 TON (15O LBS) JACK FROM UNDER CRUSHER
WHILE MEASURING DRILL STEEL WITH A TAPE MEASURE IT GOT CAUGHT EMPLOYEE PULLED ON IT & IN DOING SO DETACHED A MUSCLE IN HIS ARM
EMPLOYEE GOT OFF ENDLOADER TO UNPLUG PRIMARY CRUSHER. AS HE WAS GETTING OFF, HE FELT PAIN IN BACK.
1991 · 2 incidents
EE MOVED WIRE ON STARTER SOLENOID, CAUSING A SPARK WHICH IGNITED UNOTICED GASOLINE FUMES FROM PNPONY MOTOR.
DRIVING FUEL TRUCK PICKUP COMING UP HILL THE TRUCK BEGAN TO JERK AND DIE CAUSING BACK PAIN
1989 · 1 incident
EMPL STEPPED INTO HOLE AND CAUGHT HIMSELF ON GUARD RAIL AND CUT ARM REQ STITCHES.
1988 · 2 incidents
EWHILE WALKING DOWN RAMP TO SUMP AREA, EMPLYEE'S FOOTING GAVE WAY AND HE FELL BACKWARDS; AS HE TRIED TO CATCH HIMSELF HE TORE TENDON IN HIS SHOULDER.
EMPLOYEE WAS LIFTING WOODEN BLOCK AND DRILL STEEL AND HAD TO SET TOWER OF THE DRILL ON WOOD RAILROAD TIE WHILE TRYING TO RETRIEVE THE RAILROAD TIE HE SPRAINED OR TWISTED HIS BACK