Mining Incidents

Palmdale Metal/Non-Metal

Robertson's · Surface
Palmdale, Los Angeles County, CA  ·  Active
MSHA Mine ID: 0404803

Palmdale has $7K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
29
Years on record
1987–2026
Latest incident
Jun 2026
Compliance record
MSHA citations since 2001
69
citations
11
significant & substantial
$7,400
proposed penalties
$7,400
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2001
59
inspections on record
1,078
inspection hours
6.4
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.
69 citations across 1,078 inspection hours.
Source: MSHA inspections data, updated weekly.

Palmdale has $7K in proposed MSHA penalties and $0 outstanding across 1 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.
$7K
proposed penalties
$7K
current assessed
$7K
paid to date
$0
outstanding
68 assessments are final orders; 1 contested dockets.
As of the most recent assessment on 2025-10-15.
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 5,592 1 0 178.8
2025 Q3 6,153 4 1 650.1
2025 Q2 6,266 0 0 0.0
2025 Q1 6,152 0 0 0.0
2024 Q4 6,526 1 0 153.2
2024 Q3 7,063 1 0 141.6
2024 Q2 7,122 0 0 0.0
2024 Q1 5,780 0 0 0.0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 7,407 0 0 0.0
2023 Q3 6,987 0 0 0.0
2023 Q2 7,259 0 0 0.0
2023 Q1 5,982 1 1 167.2
2022 Q4 6,325 0 0 0.0
2022 Q3 7,197 0 0 0.0
2022 Q2 5,764 0 0 0.0
2022 Q1 6,843 0 0 0.0
2021 Q4 6,850 1 1 146.0
2021 Q3 7,650 0 0 0.0
2021 Q2 8,196 0 0 0.0
2021 Q1 7,887 0 0 0.0
2020 Q4 6,645 0 0 0.0
2020 Q3 7,981 1 0 125.3
2020 Q2 8,427 0 0 0.0
2020 Q1 8,271 0 0 0.0
2019 Q4 7,850 1 1 127.4
2019 Q3 8,415 0 0 0.0
2019 Q2 8,364 0 0 0.0
2019 Q1 7,559 0 0 0.0
2018 Q4 8,973 3 1 334.3
2018 Q3 8,768 0 0 0.0
2018 Q2 8,770 1 0 114.0
2018 Q1 8,674 0 0 0.0
2017 Q4 9,001 1 0 111.1
2017 Q3 9,363 1 0 106.8
2017 Q2 9,924 0 0 0.0
2017 Q1 8,727 0 0 0.0
2016 Q4 9,286 1 0 107.7
2016 Q3 10,144 0 0 0.0
2016 Q2 10,645 0 0 0.0
2016 Q1 9,630 0 0 0.0
2015 Q4 9,617 1 0 104.0
2015 Q3 9,755 0 0 0.0
2015 Q2 9,242 2 0 216.4
2015 Q1 9,580 0 0 0.0
2014 Q4 9,296 3 1 322.7
2014 Q3 9,796 0 0 0.0
2014 Q2 9,596 0 0 0.0
2014 Q1 9,554 1 0 104.7
2013 Q4 9,677 0 0 0.0
2013 Q3 8,985 0 0 0.0
2013 Q2 8,601 0 0 0.0
2013 Q1 8,661 0 0 0.0
2012 Q4 8,506 1 0 117.6
2012 Q3 8,313 0 0 0.0
2012 Q2 8,777 1 0 113.9
2012 Q1 8,716 0 0 0.0
2011 Q4 9,054 1 0 110.4
2011 Q3 9,236 0 0 0.0
2011 Q2 8,129 0 0 0.0
2011 Q1 8,352 1 0 119.7
2010 Q4 7,968 0 0 0.0
2010 Q3 9,315 0 0 0.0
2010 Q2 10,376 3 0 289.1
2010 Q1 9,786 0 0 0.0
2009 Q4 10,737 3 0 279.4
2009 Q3 10,487 0 0 0.0
2009 Q2 8,992 4 1 444.8
2009 Q1 12,130 2 0 164.9
2008 Q4 14,107 0 0 0.0
2008 Q3 15,318 1 0 65.3
2008 Q2 14,893 0 0 0.0
2008 Q1 13,661 3 1 219.6
2007 Q4 16,275 0 0 0.0
2007 Q3 18,441 0 0 0.0
2007 Q2 21,161 1 1 47.3
2007 Q1 20,735 0 0 0.0
2006 Q4 21,309 2 0 93.9
2006 Q3 22,111 2 0 90.5
2006 Q2 23,366 1 0 42.8
2006 Q1 21,073 0 0 0.0
2005 Q4 21,354 2 0 93.7
2005 Q3 19,631 0 0 0.0
2005 Q2 19,679 0 0 0.0
2005 Q1 12,489 0 0 0.0
2004 Q4 13,102 0 0 0.0
2004 Q3 13,100 2 0 152.7
2004 Q2 14,262 2 0 140.2
2004 Q1 13,434 3 0 223.3
2003 Q4 16,026 0 0 0.0
2003 Q3 16,660 1 0 60.0
2003 Q2 16,400 0 0 0.0
2003 Q1 15,256 0 0 0.0
2002 Q4 14,604 2 0 136.9
2002 Q3 15,171 3 2 197.7
2002 Q2 13,924 2 0 143.6
2002 Q1 13,695 0 0 0.0
2001 Q4 12,849 0 0 0.0
2001 Q3 12,197 1 0 82.0
2001 Q2 11,263 0 0 0.0
2001 Q1 3,035 0 0 0.0
2000 Q4 9,153 0 0 0.0
2000 Q3 8,735 0 0 0.0
2000 Q2 9,400 0 0 0.0
2000 Q1 8,955 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

29 on file

2026 · 1 incident

June 11, 2026 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Robertson's · Over-exertion (Not Elsewhere Classified)

Miner was exiting a shaker deck, stepped wrong and rolled R-ankle.

2021 · 1 incident

October 19, 2021 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Robertson's · Struck by... (Not Elsewhere Classified)

Was cutting belting with a razor knife, blade slipped and cut through EE's glove & R-index finger.

2020 · 1 incident

May 22, 2020 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Robertson's · Over-exertion (Not Elsewhere Classified)

Employee stated through the course of duties changing screens on a shaker deck on 5/22/2020 that employee's knee tightened up. Employee thought it would be fine, but 5-hours into the shift on 5/23/2020 employee reported the injury.

2008 · 1 incident

October 8, 2008 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Service Rock Products · Fall onto or against objects

Employee was greasing his loader when he slipped and fell hitting his side on the loader and cracked 3 ribs.

2007 · 3 incidents

July 16, 2007 CA · Metal/Non-Metal quality control technician, laboratory technician, laboratory assistant SLIP OR FALL OF PERSON
Service Rock Products · Fall down stairs

Employee was walking down stairs and slipped and fell.

June 23, 2007 CA · Metal/Non-Metal mechanic helper HANDTOOLS (NONPOWERED)
Service Rock Products · Struck against stationary object

Employee was attempting to un-hook a com-a-long from a chute and cut his arm on the chute.

February 26, 2007 CA · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider HANDLING OF MATERIALS
Service Rock Products · Contact with hot objects or substances

Employee noticed a piece of metal that was on a conveyor belt (that just had gone through a crusher) and went to pick it up, the metal was hot and burnt two of his fingers.

2006 · 3 incidents

July 26, 2006 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Service Rock Products · Over-exertion in wielding or throwing objects

Swinging a sledge hammer at a wedge in a cone crusher and missed the wedge. While swinging through, he felt a sting in his upper left shoulder.

March 17, 2006 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Service Rock Products · Over-exertion (Not Elsewhere Classified)

Climbing up ladder to enter cab of Haul Truck, felt pain in lower back.

February 6, 2006 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Service Rock Products · Struck against a moving object

Driving haul truck - back pain.

2005 · 1 incident

March 23, 2005 CA · Metal/Non-Metal mechanic helper HANDTOOLS (NONPOWERED)
Service Rock Products · Struck against stationary object

Employee was cleaning out a chute that had build-up of material with a shovel. He stabbed at the build-up with the shovel and felt pain in his arm. Reported injury on 3/29/05.

2003 · 3 incidents

October 13, 2003 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Service Rock Products · Fall from scaffolds, walkways, platforms

EE PARKED HAUL TRUCKS SIDE BY SIDE THEN STEPPED ACROSS FROM PLATFORM TO PLATFORM. EE SLIPPED & FELL DOWNWARD BETWEEN PLATFORM CAUSING INJURY TO LEFT SIDE.

October 8, 2003 CA · Metal/Non-Metal

EMPLOYEE WAS STEPPING AWAY FROM WATER TRUCK CAB WHEN HE SLIPPED AND FELL TO THE GROUND, HIT HIS REAR END FIRST THEN HIS SHOULDER.

May 2, 2003 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Service Rock Products · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS DOING CLEAN-UP IN THE AREA OF #2B CONVEYOR (STAND AND CRUSHER UNDER BELT), WHEN A 4" - 8" ROCK CAME FROM ABOVE AND STRUCK HIM ON THE RIGHT FOREARM CAUSING CONSIDERABLE SWELLING AN D PAIN. HE WAS TAKEN TO DOCTOR.

2002 · 2 incidents

October 30, 2002 CA · Metal/Non-Metal driver, jeep driver, tractor operator HANDLING OF MATERIALS
Service Rock Products · Over-exertion (Not Elsewhere Classified)

EE WAS ATTEMPTING TO PRE TRIP A WATER TRUCK SERVICE THE TRUCK REQUIRED OPENING THE HOOD EE BELIVES ABOUT THREE WEEKS AGO HE FELT A PAIN IN HIS STOMACH WHILE OPENING THE HOOD.WENT TO HIS OWN DOCTOR ON 10-24-02 REPORTED TO CO. 10-25-02

June 21, 2002 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
Service Rock Products · Struck by... (Not Elsewhere Classified)

WINDY CONDITIONS CAUSED WIND BLOWN DUST TO GO AROUND EYE PROTECTION & INTO EE'S EYE. INJURY WAS FIRST AID UNTIL 6/26/02 REQUEST FOR MEDICAL.

2001 · 1 incident

December 20, 2001 CA · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider HANDTOOLS (NONPOWERED)
Service Rock Products · Struck by flying object

EE WAS HELPING REPLACE SCREENS, ATTEMPTING TO REMOVE A WEDGE WITH A 4LB. SLEDGE HAMMER IN A HARD TO REACH LOCATION. HE INADVERTANTLY HIT THE RUBBER DONUT. THE HAMMER BOUNCED BACK & HIT HIS FIN GER AGAINST THE SHAKER SCREEN BASE.

2000 · 1 incident

October 4, 2000 CA · Metal/Non-Metal truck driver HANDLING OF MATERIALS
Service Rock Products · Over-exertion in lifting objects

LIFTINGS PROCEDURES USED TO LIFT SCREENS, EE WAS LEANING OVER A SPRAY BAR USING HIS CHEST AS LEVERAGE TOLIFT UP SCREENS WITH BOTH HANDS ON A SET OF HOOKS ATTACHED TO THE SCREENS TO PULL IT UP WHEN EE HEARD A POP AND FELT PAIN IN HIS CHEST.

1999 · 1 incident

September 10, 1999 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Service Rock Products · Fall to the walkway or working surface

EE WAS COMPLETING A WALK AROUND INSPECTION OF PIT TRUCK WHEN HIS LEFT GAVE-OUT CAUSING EE TO FALL AND HAD HIT HIS LEFT KNEE AGAINST THE GROUND THE IMPACT CAUSED SWEALING AND PAIN. THE EE STATE D HE HAD PREVIOUS PROBLEMS/INJURY WITH THIS KNEEWHICH CAUSES IT TO GIVE WAY SOMETIMES.

1993 · 2 incidents

November 1, 1993 CA · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor OTHER
Service Rock Products · Unclassified, insufficient data

CAUSE UNKNOWN--DEVELOPED BACK PAIN OVER PERIOD OF TIME STARTING IN NOVEMBER, 1993.

June 17, 1993 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Service Rock Products · Fall from machine

WHILE REPAIRING VEHICLE, EMPLOYEE SLIPPED ON REAR BUMPER.

1992 · 3 incidents

November 10, 1992 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Service Rock Products · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS PULLING WIRE XX CABLE WHEN HE CUT HIS HAND.

August 26, 1992 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver FIRE
Service Rock Products · Fall from machine

WHILE DRIVING DUMP TRUCK, VEHICLE CAUGHT FIRE AND EMPLOYEE JUMPED OUT.

July 7, 1992 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Service Rock Products · Caught in, under or between (Not Elsewhere Classified)

FRONT WHEEL OF TRUCK DUG IN AND TURNED SUDDENLY, CAUSING STEERING WHEEL TO TURN AND SNAGGING HIS HAND.

1990 · 2 incidents

October 2, 1990 CA · Metal/Non-Metal outside foreman, leadman POWERED HAULAGE
Service Rock Products · Struck against a moving object

EMPL CLAIMS OPERATING HEAVY EQUIP CAUSED CHRONIC BACK PAIN. EMPL FIRST BECAME AWARE OF INCIDENT ON 10/22 CLAIM IS UNDER DISPUTE. LAST DAY WORKED 10/02

January 5, 1990 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Service Rock Products · Over-exertion in lifting objects

EMPLOYEE PULLED HIS SHOULDER WHEN HE LIFTED A HEAVY BUCKET FILLED WITH ROCK AND SAND.

1989 · 1 incident

April 5, 1989 CA · Metal/Non-Metal clerk, timekeeper, office worker, director of sales HANDLING OF MATERIALS
Service Rock Products · Fall down stairs

TWO EMP WERE HOLDING A CABLE AND ONE EMP LET GO OF CABLE CAUINSG INJ TO INJ HAND THIS ACC HAPPEN DURING THE PLANT CONSTRUCT. NO MATERIAL BEING PROCESSED.

1988 · 1 incident

August 15, 1988 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Arrow Rock Materials · Fall from machine

EMPLOYEE WAS WORKING ON SCRAPER WITH GREASY HANDS SHE DROPPED A BOLT AND SLIPPED SHE COULD NOT CATCH SELF AND FELL OFF THE EQUIPMENT SHE STUCK HER HEAD ON THE GROUND

1987 · 1 incident

June 30, 1987 CA · Metal/Non-Metal welder (shop) HANDTOOLS (NONPOWERED)
Arrow Rock Materials · Struck by flying object

ANOTHER EMPLOYE9,WAS HAMMERING A PIN AND INJURED EMPLOYEE WAS STRUCK BY A CHIP OF THE PIN.CHIP ENTERED LEG AND REQUIRED REMOVAL AND STITCHES.

For insurers, brokers, and safety consultants

The full compliance file on Palmdale

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.