Mining Incidents

Troy Grove Stone Quarry (MC46) Metal/Non-Metal

Controlled by Riverstone Group
Utica, La Salle County, IL  ·  Active
MSHA Mine ID: 1102864

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
Compliance record
MSHA citations since 2000
183
citations
34
significant & substantial
$29,566
proposed penalties
$27,848
paid to date
94% of proposed penalties paid to date, a $1,718 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
69
inspections on record
1,144
inspection hours
16.0
citations per 100 inspection hours
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
183 citations across 1,144 inspection hours.
Source: MSHA inspections data, updated weekly.

Troy Grove Stone Quarry (MC46) has $30K in proposed MSHA penalties and $0 outstanding across 8 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$30K
proposed penalties
$28K
current assessed
$28K
paid to date
$0
outstanding
183 assessments are final orders; 8 contested dockets.
As of the most recent assessment on 2025-10-20.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Quarterly safety rates
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.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
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 4 1 628.4
2024 Q3 8,432 5 0 593.0
2024 Q2 8,074 0 0 0.0
2024 Q1 5,491 0 0 0.0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
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 9 5 1888.4
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 8 3 834.4
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 1 0 110.6
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 14 3 1147.2
2001 Q1 10,036 0 0 0.0
2000 Q4 11,250 2 1 177.8
2000 Q3 12,990 13 3 1000.8
2000 Q2 7,167 0 0 0.0
2000 Q1 10,955 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

36 on file

2025 · 1 incident

June 5, 2025 IL · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
RiverStone Group Inc · Struck by flying object

Employee utilized an air hammer to free a stuck part when part of the tooling broke off and punctured their arm.

2024 · 1 incident

February 27, 2024 IL · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
RiverStone Group Inc · Over-exertion (Not Elsewhere Classified)

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

August 12, 2023 IL · Metal/Non-Metal utility man, shift tech, service/dump truck operator HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion in lifting objects

Employee alleges they were moving cable wires off of a truck and they heard their left shoulder pop.

2022 · 2 incidents

August 5, 2022 IL · Metal/Non-Metal dry screening plant operator, screen house operator HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion in pulling or pushing objects

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.

July 7, 2022 IL · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
RiverStone Group Inc · Struck by... (Not Elsewhere Classified)

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

October 18, 2021 IL · Metal/Non-Metal miner, prospector, nec SLIP OR FALL OF PERSON
RiverStone Group Inc · Over-exertion (Not Elsewhere Classified)

Employee alleges they were walking along side of the log feed and they stepped on some rocks twisting left knee.

August 2, 2021 IL · Metal/Non-Metal cleanup man, cleanup worker HANDTOOLS (NONPOWERED)
RiverStone Group Inc · Struck by... (Not Elsewhere Classified)

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

May 28, 2020 IL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
RiverStone Group Inc · Caught in, under or between a moving and a stationary object

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

March 3, 2017 IL · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker SLIP OR FALL OF PERSON
RiverStone Group Inc · Over-exertion (Not Elsewhere Classified)

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

December 16, 2013 IL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
RiverStone Group Inc · Over-exertion (Not Elsewhere Classified)

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

September 11, 2012 IL · Metal/Non-Metal drill operator SLIP OR FALL OF PERSON
RiverStone Group Inc · Fall to the walkway or working surface

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.

January 23, 2012 IL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
RiverStone Group Inc · Fall to the walkway or working surface

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

September 16, 2011 IL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
RiverStone Group Inc · Struck against a moving object

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.

June 6, 2011 IL · Metal/Non-Metal assayer, geologist, metallurgist, engineer, engineer management HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion (Not Elsewhere Classified)

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

September 9, 2010 IL · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
RiverStone Group Inc · Fall to the walkway or working surface

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

October 26, 2009 IL · Metal/Non-Metal assayer, geologist, metallurgist, engineer, engineer management MACHINERY
RiverStone Group Inc · Caught in, under or between (Not Elsewhere Classified)

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

March 6, 2007 IL · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
RiverStone Group Inc · Struck by... (Not Elsewhere Classified)

Employee alleges he was trying to roll logs in the washer; prybar slipped and cut his chin. He received 3 stitches.

2003 · 1 incident

May 2, 2003 IL · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
RiverStone Group Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEE ALLEGES SHE WAS TRIMMING BUSHES AND THE HEDGE CLIPPER SLIPPED AND CUT HER LEFT POINTER FINGER.

2002 · 2 incidents

June 11, 2002 IL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
RiverStone Group Inc · Struck by... (Not Elsewhere Classified)

EE ALLEGES HE WAS LOWERING WIRE OVER HIGH WALL, THE WIRE FLEW OUT OF CONTROL & HIT HIS WRIST.

June 7, 2002 IL · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion in lifting objects

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

August 20, 2001 IL · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
RiverStone Group Inc · Struck by... (Not Elsewhere Classified)

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

April 12, 2000 IL · Metal/Non-Metal drill helper HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion in pulling or pushing objects

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

August 18, 1999 IL · Metal/Non-Metal clerk, timekeeper, office worker, director of sales HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion in lifting objects

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

August 4, 1997 IL · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
RiverStone Group Inc · Struck by... (Not Elsewhere Classified)

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

January 13, 1995 IL · Metal/Non-Metal assayer, geologist, metallurgist, engineer, engineer management SLIP OR FALL OF PERSON
RiverStone Group Inc · Fall onto or against objects

EE WAS STEPPING DOWN OFF OF MACHINE WHEN HE SLIPPED AND HIT HIS ELBOW.

1994 · 1 incident

July 18, 1994 IL · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
RiverStone Group Inc · Fall from machine

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

June 9, 1993 IL · Metal/Non-Metal rock driller HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion in lifting objects

EMPLOYEE BENTO OVER & WAS REMOVING A DRILL HOLE PLUG WHEN HE FELT A SHARP PAIN IN HIS LOWER BACK.

April 24, 1993 IL · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion in lifting objects

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

July 11, 1992 IL · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion (Not Elsewhere Classified)

EMPLOYEE WAS REMOVING A 25 TON (15O LBS) JACK FROM UNDER CRUSHER

May 19, 1992 IL · Metal/Non-Metal HANDTOOLS (NONPOWERED)
RiverStone Group Inc · Over-exertion in pulling or pushing objects

WHILE MEASURING DRILL STEEL WITH A TAPE MEASURE IT GOT CAUGHT EMPLOYEE PULLED ON IT & IN DOING SO DETACHED A MUSCLE IN HIS ARM

May 18, 1992 IL · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion (Not Elsewhere Classified)

EMPLOYEE GOT OFF ENDLOADER TO UNPLUG PRIMARY CRUSHER. AS HE WAS GETTING OFF, HE FELT PAIN IN BACK.

1991 · 2 incidents

June 28, 1991 IL · Metal/Non-Metal superintendent FIRE
RiverStone Group Inc · Absorption of radiations, caustics, toxic and noxious substances

EE MOVED WIRE ON STARTER SOLENOID, CAUSING A SPARK WHICH IGNITED UNOTICED GASOLINE FUMES FROM PNPONY MOTOR.

June 18, 1991 IL · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
RiverStone Group Inc · Struck against a moving object

DRIVING FUEL TRUCK PICKUP COMING UP HILL THE TRUCK BEGAN TO JERK AND DIE CAUSING BACK PAIN

1989 · 1 incident

September 25, 1989 IL · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
RiverStone Group Inc · Fall onto or against objects

EMPL STEPPED INTO HOLE AND CAUGHT HIMSELF ON GUARD RAIL AND CUT ARM REQ STITCHES.

1988 · 2 incidents

September 16, 1988 IL · Metal/Non-Metal superintendent SLIP OR FALL OF PERSON
RiverStone Group Inc · Over-exertion (Not Elsewhere Classified)

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.

April 18, 1988 IL · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
RiverStone Group Inc · Over-exertion in lifting objects

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

For insurers, brokers, and safety consultants

The full compliance file on Troy Grove Stone Quarry (MC46)

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.