Mining Incidents

Lone Mountain Pit Metal/Non-Metal

Clark, Clark County, NV  ·  Active
MSHA Mine ID: 2602142

Lone Mountain Pit has $821K in proposed MSHA penalties and $0 outstanding across 23 contested dockets, plus health sampling and the full incident record.

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Fatalities
2
Total incidents
34
Years on record
1990–2026
Latest incident
May 2026
Compliance record
MSHA citations since 2000
706
citations
171
significant & substantial
$820,742
proposed penalties
$662,413
paid to date
81% of proposed penalties paid to date, a $158,329 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
107
inspections on record
2,551
inspection hours
27.7
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.
706 citations across 2,551 inspection hours.
Source: MSHA inspections data, updated weekly.

Lone Mountain Pit has $821K in proposed MSHA penalties and $0 outstanding across 23 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.
$821K
proposed penalties
$662K
current assessed
$662K
paid to date
$0
outstanding
688 assessments are final orders; 23 contested dockets.
As of the most recent assessment on 2026-02-04.
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 19,449 0 0 0.0
2025 Q3 18,606 11 0 591.2
2025 Q2 18,592 0 0 0.0
2025 Q1 14,710 9 2 611.8
2024 Q4 15,870 0 0 0.0
2024 Q3 26,043 12 0 460.8
2024 Q2 26,362 0 0 0.0
2024 Q1 20,315 0 0 0.0
Show 94 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 24,586 46 9 1871.0
2023 Q3 24,982 12 1 480.3
2023 Q2 20,053 8 1 398.9
2023 Q1 24,306 4 4 164.6
2022 Q4 23,991 0 0 0.0
2022 Q3 22,293 2 0 89.7
2022 Q2 24,037 0 0 0.0
2022 Q1 20,988 9 3 428.8
2021 Q4 16,138 0 0 0.0
2021 Q3 21,003 3 1 142.8
2021 Q2 19,586 0 0 0.0
2021 Q1 16,039 0 0 0.0
2020 Q4 13,041 11 4 843.5
2020 Q3 13,650 11 1 805.9
2020 Q2 15,235 0 0 0.0
2020 Q1 15,992 8 2 500.3
2019 Q4 14,063 0 0 0.0
2019 Q3 13,174 7 2 531.3
2019 Q2 13,868 2 0 144.2
2019 Q1 17,146 9 2 524.9
2018 Q4 12,458 0 0 0.0
2018 Q3 10,472 16 3 1527.9
2018 Q2 7,961 0 0 0.0
2018 Q1 6,778 0 0 0.0
2017 Q4 5,538 11 3 1986.3
2017 Q3 5,660 6 0 1060.1
2017 Q2 11,194 0 0 0.0
2017 Q1 9,364 18 6 1922.3
2016 Q4 8,687 0 0 0.0
2016 Q3 9,042 5 2 553.0
2016 Q2 7,528 0 0 0.0
2016 Q1 5,608 5 2 891.6
2015 Q4 7,809 0 0 0.0
2015 Q3 12,085 0 0 0.0
2015 Q2 8,290 5 1 603.1
2015 Q1 8,457 5 1 591.2
2014 Q4 8,839 0 0 0.0
2014 Q3 8,100 6 1 740.7
2014 Q2 13,160 0 0 0.0
2014 Q1 12,862 8 3 622.0
2013 Q4 12,786 12 3 938.5
2013 Q3 10,449 9 3 861.3
2013 Q2 17,808 9 3 505.4
2013 Q1 15,999 1 1 62.5
2012 Q4 14,183 0 0 0.0
2012 Q3 15,243 18 6 1180.9
2012 Q2 13,379 0 0 0.0
2012 Q1 11,760 13 2 1105.4
2011 Q4 15,257 5 4 327.7
2011 Q3 15,450 14 1 906.1
2011 Q2 14,940 0 0 0.0
2011 Q1 15,850 4 1 252.4
2010 Q4 17,218 0 0 0.0
2010 Q3 15,287 3 1 196.2
2010 Q2 15,125 28 13 1851.2
2010 Q1 23,380 47 20 2010.3
2009 Q4 26,700 0 0 0.0
2009 Q3 33,892 13 4 383.6
2009 Q2 36,922 2 0 54.2
2009 Q1 35,134 15 3 426.9
2008 Q4 37,507 0 0 0.0
2008 Q3 45,419 1 0 22.0
2008 Q2 61,331 15 1 244.6
2008 Q1 60,440 0 0 0.0
2007 Q4 54,111 8 1 147.8
2007 Q3 52,612 12 1 228.1
2007 Q2 61,053 0 0 0.0
2007 Q1 62,665 14 1 223.4
2006 Q3 63,275 14 7 221.3
2006 Q2 66,672 2 0 30.0
2005 Q4 61,642 1 0 16.2
2005 Q3 63,223 59 10 933.2
2005 Q2 60,431 2 0 33.1
2005 Q1 61,833 13 4 210.2
2004 Q4 66,200 0 0 0.0
2004 Q3 67,987 11 5 161.8
2004 Q2 71,515 1 0 14.0
2004 Q1 71,816 7 3 97.5
2003 Q4 68,414 1 0 14.6
2003 Q3 65,668 4 0 60.9
2003 Q2 64,434 5 1 77.6
2003 Q1 59,525 0 0 0.0
2002 Q4 57,513 0 0 0.0
2002 Q3 55,568 0 0 0.0
2002 Q2 53,602 20 8 373.1
2002 Q1 52,354 0 0 0.0
2001 Q4 52,012 0 0 0.0
2001 Q3 46,560 6 0 128.9
2001 Q2 60,914 0 0 0.0
2001 Q1 44,758 0 0 0.0
2000 Q4 48,118 0 0 0.0
2000 Q3 44,554 11 0 246.9
2000 Q2 48,764 0 0 0.0
2000 Q1 44,354 0 0 0.0

Fatalities at this mine

2 recorded
May 21, 2026 NV · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor Fatality · EXPLODING VESSELS UNDER PRESSURE
Nevada Ready Mix Corporation · Struck by flying object

A contract mechanic/welder hired by another contractor was fatally injured when the ammonium nitrate auger EE was attempting to extract from a pipe exploded.

September 22, 1998 NV · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer Fatality · POWERED HAULAGE
Nevada Ready Mix Corporation · Caught in, under or between (Not Elsewhere Classified)

AT 21:10 HE WAS ASSIGNED TO PUSH MATERIAL INTO THE UPPER WASH PLANTS SURGE PILE. AT 21:20 I.NAME NOTICED THAT THERE WAS NO FEED. HE INVESTIGATED AND FOUND HIM ENTRAPPED IN FEEDER.

Reportable incidents

32 on file (excluding fatalities above)

2023 · 2 incidents

May 12, 2023 NV · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Nevada Ready Mix Corporation · Caught in, under or between a moving and a stationary object

Haul truck driver closed the truck door on their own finger.

February 22, 2023 NV · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Nevada Ready Mix Corporation · Struck against a moving object

100 ton haul truck was preparing to dump when the ground gave way causing the truck to flip over backwards.

2020 · 2 incidents

July 7, 2020 NV · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Nevada Ready Mix Corporation · Struck against a moving object

While driving the front end loader toward a stock pile of material the left front tire ran over a large rock jolting the operator in the cab.

January 22, 2020 NV · Metal/Non-Metal trespasser OTHER
Nevada Ready Mix Corporation · Unclassified, insufficient data

Just as the sun came up truck driver noticed a motionless body lying on the ground at the base of the reclaim pit north high wall. Driver called another employee and they inspected the deceased body, determined the person was not an employee. 2nd employee drove out of the pit to a location where they could get a signal and called me. I immediately called 911 and the MSHA hotline.

2016 · 2 incidents

September 30, 2016 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Nevada Ready Mix Corporation · Fall to the walkway or working surface

While using a com-a-long to lift a screen deck the handle broke on the com-a-long causing the employee to fall backwards and in doing so EE's left are flailed to catch self and EE hit EE's arm/wrist on the cat walk railing displacing the distal radius.

June 2, 2016 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Nevada Ready Mix Corporation · Struck by... (Not Elsewhere Classified)

The miner was using a hand grinder with right hand to smooth out an area on a piece of metal when the grinder at some point grabbed the metal and jumped to the left nicking the middle finger of the left hand of the miner which was bracing the metal.

2015 · 1 incident

December 9, 2015 NV · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Nevada Ready Mix Corporation · Struck by... (Not Elsewhere Classified)

Employee was pounding on a ripper tooth with a hammer trying to dislodge it from the ripper on a D11 dozer when a small piece of metal broke off the tooth and hit the employee in the lower leg. Mechanic was driven to the emergency room where it was determined to leave the metal in the leg and apply 2 stitches. The mechanic returned to full duty the next day.

2011 · 1 incident

October 20, 2011 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Nevada Ready Mix Corporation · Caught in, under or between running or meshing objects

Miner was checking a head pulley bearing on a stacker belt against his outlined duties and without prior instruction when he got his had caught between the pulley and the wiper causing a severe crushing injury to his right hand.

2003 · 2 incidents

November 3, 2003 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Nevada Ready Mix Corporation · Struck by... (Not Elsewhere Classified)

WHILE CUTTING 1" PLATE DEBRIS CAME UP UNDER SAFETY GLASSES, EMBEDDING IN RIGHT EYE.

2002 · 1 incident

2001 · 2 incidents

July 18, 2001 NV · Metal/Non-Metal miner, nec SLIP OR FALL OF PERSON
Nevada Ready Mix Corporation · Over-exertion (Not Elsewhere Classified)

EE TWISTED HER LEFT ANKLE WALKING DOWN STAIR AT THE WASHPLANT. EE RET'D TO WORK BUT AFTER 2 DAYS, SHE STILL FELT PAIN IN ANKLE. SHE RET'D TO DR 7/20/01 ON 7/20/01 DR ADVISED EE SHE COULD RETURN TO WORK AS LONG AS SHE LIMITED HER WALKING

July 5, 2001 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman OTHER
Nevada Ready Mix Corporation · Struck by flying object

EE HAD SMALL ROCKS AND DUST BLOWN INTO HIS EYES WHILE EXITING A PIECE OF EQUIPMENT.

1999 · 1 incident

March 8, 1999 NV · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Nevada Ready Mix Corporation · Struck by... (Not Elsewhere Classified)

A TRUCK WAS BEING OFF LOADED BY A FORKLIFT. THE LEFT FORK GOT HUNG ON A PIECE OF METAL ON THE TRAILER. THE FORK BROKE FREE AND STRUCK THE EMPLOYEE JUST ABOVE THE CHIN, CUTTING A GASH IN IT. EM PLOYEE WAS TREATED AND RELEASED. WILL HOLD A SAFETY COMMITTEE MEETING WHEN EMPLOYEE RETURNS TO WORK.

1997 · 1 incident

1996 · 5 incidents

December 18, 1996 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Nevada Ready Mix Corporation · Fall onto or against objects

SLIPPED AND LANDED ON 4X12 WITH LEFT LEG BREAKING TIBIA.

December 11, 1996 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Nevada Ready Mix Corporation · Fall onto or against objects

SLIPPED WHILE CLEANING SCREEN AND EITHER TWISTED OR HIT KNEE ON PIECE OF STEEL.

July 17, 1996 NV · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Nevada Ready Mix Corporation · Caught in, under or between a moving and a stationary object

THE EMPLOYEE WAS STANDING IN A 966-F LOADER BUCKET IN ORDER TO REACH THE FLASHING OF THE SCREEN FEED BELT AT THE CRUSHER. THE LOADER'S PARKING BRAKE WAS APPLIED AND WAS STABLE FOR APPROX. 20 M INS. FOR AN UNKNOWN REASON, THE LOADER STARTED MOVING AHEAD, PINCHING THE OPERATOR BETWEEN THE BUCKET AND THE CONVEYOR BELT. INJURIES TO THE EMPLOYEE WERE IN THE UPPER BODY.

March 23, 1996 NV · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Nevada Ready Mix Corporation · Struck against stationary object

AN EE BUMPED A STEEL PLATE THAT WAS IN A MATERIAL CHUTE & STRUCK THIS EE IN THE HEAD. THERE WAS A CUT THAT REQUIRED NINE STITCHES.

January 17, 1996 NV · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator OTHER
Nevada Ready Mix Corporation · Fall from machine

LOADER OPERATOR, EE WENT OUTSIDE TO WASH WINDOW S WHEN A GUST OF WIND MADE HIM LOOSE HIS BALANCE AND FELL OFF LOADER. ALL HANDRAILS WERE IN PLACE. CRACKED RIBS AND SORENESS IS ALL THAT IS KNO WN TO BE WRONG AT TIME OF WRITING.

1995 · 2 incidents

September 18, 1995 NV · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech POWERED HAULAGE
Nevada Ready Mix Corporation · Fall onto or against objects

A SEVICE TRUCK WAS STUCK AT THE TAIL PULLEYS OF THE FEEDBELTS OF THE UPPER WET PLANT. A FRONT END LOADER WENT TO PULL OUT THE SERVICE TRUCK. WHEN THE BRAKES FAILED TO COMPLETELY STOP THE LOADE R BEFORE HITTING THE SERVICE TRUCK. THE MAINTENANCE OPERATOR WAS GETTING A CHAIN OUT OF THE BED OF THE SERVICE TRUCK, WHEN THE IMPACT OF THE LOADER HITTING THE TRUCK MADE THE OPERATOR FALL IN

July 21, 1995 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Nevada Ready Mix Corporation · Struck by falling object

A ROCK WAS STUCK IN THE JAW CRUSHER. PLANT FOREMAN SHUT DOWN CRUSHER. THE PLANT OPERATOR TRIED TO PRY OUT THE ROCK, WHEN ANOTHER ROCK BECAME DISLODGED AND FRACTURED HIS LEFT FOOT.

1994 · 1 incident

March 1, 1994 NV · Metal/Non-Metal electrician, lineman ELECTRICAL
Nevada Ready Mix Corporation · Flash burns (electric)

A TEST WAS BEING MADE OF VOLTAGE DROP ACROSS ELECTRICAL CIRCUIT. THE TEST LEADS SHORTED A WIRE ACROSS TOO ELECTRICAL TERMINALS CAUSING A DEAD SHORT.

1992 · 2 incidents

September 4, 1992 NV · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider POWERED HAULAGE
Nevada Ready Mix Corporation · Caught in, under or between two or more moving objects

THE EMPLOYEE WAS CLEANING THE FRAME WORK OF A CONVEYOR BELT WHEN A PORTION OF HIS ARM WAS ROLLED THROUGH THE TROUGHING ROLLER AND THE BELT. THIS ACCIDENT RESULTED IN A BRUISED LEFT FOREARM.

March 5, 1992 NV · Metal/Non-Metal welder (shop) MACHINERY
Nevada Ready Mix Corporation · Contact with hot objects or substances

OPERATOR WAS CUTTING OFF HITCH OF TRAILER WHEN A HOT EMBER ENTERED EAR. HAD EAR PLUGS IN POCKET.EMBER BURNED THE INSIDE OF EAR.

1991 · 2 incidents

September 26, 1991 NV · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Nevada Ready Mix Corporation · Fall down stairs

EMPLOYEE WENT TO ADJUST POLYMER MIXER ON CLARIFIER ON THE WAY DOWN THE STEPS EMPLOYEE SLIPPED ON STEPS & FELL EMPLOYEE INJURED HIS LEG & WENT TO THE DOC TO HAVE IT CHECKED

April 8, 1991 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Nevada Ready Mix Corporation · Struck against stationary object

THOUGHT MATERIAL BUILDUP WAS CAUSING CONVEYOR NOT TO MOVE FREELY. WENT TO CLEAN AREA BEHIND CONVEYOR AND HIT CORNER OF CONVEYOR WITH RIGHT ANKLE.

1990 · 5 incidents

September 7, 1990 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Nevada Ready Mix Corporation · Caught in, under or between a moving and a stationary object

EMPLOYEE WAS STANDING ON FRAMEWORK OF A RUNNING CONVEYOR BELT WHICH IS AN UNAUTHORIZEWD RESTRICTED AREA HE WAS ATTEMPTING APPARENT LY TO CLEAN PULLEY THERE WAS FROM REPORT TRAUMA TO THE RT ARM WHICH RESULTED IN SURGICAL PROCEDURES

August 9, 1990 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Nevada Ready Mix Corporation · Fall from machine

SHOVELING GRAVEL OFF CONVEYOR BELT RAILS AND UNDER ROLLERS. LOST BALANCE AND FELL OFF THE SIDE OF BELT TO THE GROUND ON LEFT SIDE AND BACK.

May 16, 1990 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Nevada Ready Mix Corporation · Fall from machine

CLIMBING OFF THE LOADER MISSED THE STEP & FELL ON TAIL BONE

February 27, 1990 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator STRIKING OR BUMPING
Nevada Ready Mix Corporation · Struck against stationary object

STEPPED FROM FENDER OF LOADER, HIT HEAD ON MIRROR BRACKET.

February 1, 1990 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator NONPOWERED HAULAGE
Nevada Ready Mix Corporation · Struck by falling object

REMOVING OXYGEN TANKS FROM TRAILER,DROPPED OXYGEN CART ON RIGHT HAND.BROKE RIGHT 3RD FINGER.

For insurers, brokers, and safety consultants

The full compliance file on Lone Mountain 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.