Mining Incidents

PALMDALE PLANT Metal/Non-Metal

CalMat Co · Surface
Controlled by Vulcan Materials Company
Littlerock, Los Angeles County, CA  ·  Active
MSHA Mine ID: 0402125

PALMDALE PLANT has $10K in proposed MSHA penalties and $738 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
30
Years on record
1984–2019
Latest incident
Oct 2019
Compliance record
MSHA citations since 2000
54
citations
11
significant & substantial
$9,600
proposed penalties
$8,862
paid to date
92% of proposed penalties paid to date, a $738 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
75
inspections on record
1,143
inspection hours
4.7
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.
54 citations across 1,143 inspection hours.
Source: MSHA inspections data, updated weekly.

PALMDALE PLANT has $10K in proposed MSHA penalties and $738 outstanding across 0 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.
$10K
proposed penalties
$10K
current assessed
$9K
paid to date
$738
outstanding
54 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-10-10.
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 11,688 1 0 85.6
2025 Q3 13,468 0 0 0.0
2025 Q2 13,130 1 0 76.2
2025 Q1 13,001 0 0 0.0
2024 Q4 13,551 2 0 147.6
2024 Q3 13,168 0 0 0.0
2024 Q2 14,444 2 1 138.5
2024 Q1 15,002 0 0 0.0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 13,208 1 1 75.7
2023 Q3 14,092 0 0 0.0
2023 Q2 13,531 0 0 0.0
2023 Q1 13,023 0 0 0.0
2022 Q4 12,394 1 0 80.7
2022 Q3 13,527 0 0 0.0
2022 Q2 13,637 1 1 73.3
2022 Q1 13,770 1 1 72.6
2021 Q4 12,556 0 0 0.0
2021 Q3 13,250 0 0 0.0
2021 Q2 13,493 1 0 74.1
2021 Q1 14,075 0 0 0.0
2020 Q4 14,199 0 0 0.0
2020 Q3 14,522 0 0 0.0
2020 Q2 12,251 0 0 0.0
2020 Q1 12,142 0 0 0.0
2019 Q4 12,095 0 0 0.0
2019 Q3 12,494 0 0 0.0
2019 Q2 12,434 0 0 0.0
2019 Q1 10,720 0 0 0.0
2018 Q4 10,735 0 0 0.0
2018 Q3 11,205 0 0 0.0
2018 Q2 11,018 1 0 90.8
2018 Q1 9,728 0 0 0.0
2017 Q4 10,110 0 0 0.0
2017 Q3 9,800 0 0 0.0
2017 Q2 7,647 1 0 130.8
2017 Q1 8,991 0 0 0.0
2016 Q4 8,809 1 0 113.5
2016 Q3 9,299 0 0 0.0
2016 Q2 9,522 0 0 0.0
2016 Q1 9,635 0 0 0.0
2015 Q4 9,446 1 0 105.9
2015 Q3 10,586 0 0 0.0
2015 Q2 10,347 0 0 0.0
2015 Q1 9,806 0 0 0.0
2014 Q4 9,071 1 0 110.2
2014 Q3 9,335 0 0 0.0
2014 Q2 10,449 1 0 95.7
2014 Q1 11,429 0 0 0.0
2013 Q4 9,130 0 0 0.0
2013 Q3 10,285 0 0 0.0
2013 Q2 10,436 1 0 95.8
2013 Q1 9,998 0 0 0.0
2012 Q4 8,927 6 2 672.1
2012 Q3 9,998 0 0 0.0
2012 Q2 10,810 1 0 92.5
2012 Q1 10,478 0 0 0.0
2011 Q4 9,943 1 0 100.6
2011 Q3 9,597 0 0 0.0
2011 Q2 8,727 3 1 343.8
2011 Q1 8,505 0 0 0.0
2010 Q4 7,733 0 0 0.0
2010 Q3 7,843 2 0 255.0
2010 Q2 8,421 0 0 0.0
2010 Q1 7,343 6 1 817.1
2009 Q4 7,488 1 0 133.5
2009 Q3 8,901 0 0 0.0
2009 Q2 8,315 0 0 0.0
2009 Q1 8,852 2 0 225.9
2008 Q4 9,492 2 0 210.7
2008 Q3 10,263 0 0 0.0
2008 Q2 11,838 4 3 337.9
2008 Q1 11,892 0 0 0.0
2007 Q4 12,573 0 0 0.0
2007 Q3 15,553 0 0 0.0
2007 Q2 16,133 0 0 0.0
2007 Q1 15,659 0 0 0.0
2006 Q4 15,681 0 0 0.0
2006 Q3 15,938 0 0 0.0
2006 Q2 15,506 2 0 129.0
2006 Q1 14,934 0 0 0.0
2005 Q4 13,040 0 0 0.0
2005 Q3 14,490 0 0 0.0
2005 Q2 14,437 0 0 0.0
2005 Q1 13,030 0 0 0.0
2004 Q4 12,836 0 0 0.0
2004 Q3 13,139 0 0 0.0
2004 Q2 12,650 0 0 0.0
2004 Q1 12,041 0 0 0.0
2003 Q4 12,853 0 0 0.0
2003 Q3 13,599 0 0 0.0
2003 Q2 14,108 1 0 70.9
2003 Q1 13,478 0 0 0.0
2002 Q4 12,729 1 0 78.6
2002 Q3 13,031 1 0 76.7
2002 Q2 12,486 0 0 0.0
2002 Q1 12,936 0 0 0.0
2001 Q4 13,202 0 0 0.0
2001 Q3 14,036 2 0 142.5
2001 Q2 13,818 0 0 0.0
2001 Q1 11,485 0 0 0.0
2000 Q4 11,282 1 0 88.6
2000 Q3 11,152 0 0 0.0
2000 Q2 12,130 0 0 0.0
2000 Q1 11,847 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

30 on file

2019 · 1 incident

October 12, 2019 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech POWERED HAULAGE
CalMat Co · Struck by falling object

On 10/12/2019 EE was taken to the hospital where EE was diagnosed with two fractures in the left hand. While reinstalling the 980H bucket pin, that the EE had placed on the back of the bucket, the pin fell on left hand while EE was lowering the bucket, resulting in two fractures to left hand. *On 5/28/2020 the EE underwent surgery to remove fracture plate, resulting in 1 day lost.

2013 · 1 incident

May 2, 2013 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
CalMat Co · Over-exertion in lifting objects

On 5/6/13 the employee requested med treatment, was taken to the Company clinic & was placed on restricted duty which was accommodated. The employee alleged that while lifting & pushing a water hose into the dust suppression tank, he felt pain in his low back. It is unknown if this alleged event occurred on mine property & it is currently being investigated by the WC TPA.

2010 · 1 incident

August 11, 2010 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
CalMat Co · Struck against stationary object

The employee went to the company clinic on 8/23/2010 and was placed on restricted duty. Employee was using two wrenches to loosen a hydraulic coupling; one wrench slipped off the fitting and employee's L-elbow hit the frame of the haul truck.

2008 · 2 incidents

July 18, 2008 CA · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger MACHINERY
CalMat Co · Contact with hot objects or substances

The employee was taken to the company clinic on 7/18/08 and was placed on restricted duty. The employee was using a cutting torch and as he re-positioned himself, he turned the torch towards his R-wrist resulting in a 1st - 2nd degree burn.

February 19, 2008 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech DISORDERS (REPEATED TRAUMA)
CalMat Co · Over-exertion (Not Elsewhere Classified)

Conditions contributing to the injury are unknown. On 2/19/08, the employee stated it is unknown how injury occurred but he has experienced right knee pain for approximately four months. The employee was taken to the company clinic on 2/19/08, was diagnosed with tendonitis and was placed on restricted duty.

2007 · 2 incidents

December 17, 2007 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
CalMat Co · Struck by... (Not Elsewhere Classified)

Employee went to the company clinic on 12/18/07 and was placed on restricted duty. The employee states that while he used a hammer and chisel to adjust skirting on a conveyor, he missed the target and struck his left thumb resulting in a contusion and laceration requiring sutures.

March 15, 2007 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalMat Co · Over-exertion in lifting objects

The employee went to see the company doctor on 3/16/2007 and was placed on restricted duty. The employee allegedly strained his back while lifting a steel plate.

2004 · 1 incident

March 19, 2004 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
CalMat Co · Struck by... (Not Elsewhere Classified)

EE WENT TO SEE COMPANY DR. ON 3/19/04, STITCHES WERE APPLIED AND HE WAS PLACED ON RESTRICTED DUTY. WHILE REMOVING NUTS AND BOLTS FROM A LOADER BUCKET, EE CUT HIS LEFT INDEX FINGER CAUSING A LACERATION.

2003 · 1 incident

September 8, 2003 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalMat Co · Struck by flying object

EE WENT TO SEE COMPANY DOCTOR ON SEP 8TH 2003 AND WAS PLACED ON RESTEICTED DUTY. EE WAS CHANGING A BEARING AND A METAL ADAPTER WHICH WAS PART OF PORTA-POWER UNIT FLEW OFF AND STRUCK EE ON LEFT WRIST AND LEFT LEG RESULTING IN CONTUSIONS.

2002 · 3 incidents

December 5, 2002 CA · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
CalMat Co · Struck by falling object

EMPLOYEE WENT TO SEE COMPANY PHYSICIAN ON 12-6-02 AND WAS PLACED ON RESTRICTED DUTY. WHILE MOVING A CHAIN SPROCKET FROM FORKLIFT, SPROCKET SLIPPED AND FRACTURED L INDEX FINGER.

August 9, 2002 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
CalMat Co · Struck against a moving object

EE WENT TO SEE CO DR ON 8/9/02 AND WAS PLACED ON RESTRICTED DUTY. EE CLAIMS THAT OPERATING MOBILE EQUIPMENT OVER THE YEARS, REAGGRAVATED AN OLD BACK INJURY. ALLEGED.

March 18, 2002 CA · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler HANDLING OF MATERIALS
CalMat Co · Struck by... (Not Elsewhere Classified)

EMPLOYEE WENT TO SEE COMPANY DOCTOR ON 3-18-02, STITCHES WERE APPLIED AND WAS RETURNED TO FULL DUTY. WHEN CHANGING TEETH ON A LOADER, EE HIT TOOTH WITH A HAMMER AND A PIECE OF METAL BROKE OFF AND HIT EE IN THE LIP/ CHIN AREA.

2001 · 1 incident

July 21, 2001 CA · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
CalMat Co · Over-exertion in lifting objects

EMPLOYEE WENT TO SEE COMPANY DOCTOR ON 7-24-01 AND WAS PLACED ON RESTRICTED DUTY. WHEN CHANGING LINERS IN THE CRUSHER, EMPLOYEE PULLED THE RUBBER LINER AND HE STRAINED HIS BACK.

2000 · 1 incident

July 19, 2000 CA · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
CalMat Co · Over-exertion in lifting objects

EMPLOYEE WENT TO SEE DOCTOR ON 7-20-00 AND WAS PLACED ON RESTRICTED DUTY. EMPLOYEE WAS MOVING SCREENS AND STRAINED LOWER BACK.

1999 · 4 incidents

October 30, 1999 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalMat Co · Over-exertion (Not Elsewhere Classified)

WHILE UNLOADING STEEL PARTS OUT OF A TRUCK, EE FELT A STRAIN IN HIS LOWER BACK.

October 20, 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
CalMat Co · Over-exertion (Not Elsewhere Classified)

WHILE EXITING CO VECHILE EE FELT A PAIN IN HIS LOWER BACK.

August 17, 1999 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
CalMat Co · Over-exertion (Not Elsewhere Classified)

EMPLOYEE WAS CHANGING SCREENS ON PLANT AND STRAINED HIS LOWER BACK.

July 27, 1999 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalMat Co · Over-exertion in lifting objects

LIFTING UP T-ROLLERS OVERHEAD TO BELT THEN ARM STARTED HURTING.

1998 · 1 incident

July 29, 1998 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Calmat Company · Struck by flying object

EE WAS CUTTING A STEEL BAND OFF A PARTS DELIVERY BOX AND AS HE CUT THE BAND IT FLEW UP AND IT HIT HIS LEFT INDEX FINGER.

1997 · 1 incident

March 28, 1997 CA · Metal/Non-Metal tipple/top lander/skip dumper operator, binman, topman HANDTOOLS (NONPOWERED)
Calmat Company · Over-exertion (Not Elsewhere Classified)

EE WAS USING A SMALL HAND WRENCH TO LOOSEN A RUSTY BOLT AND NUT WHEN HE FELT A PULL IN HIS LOWER BACK.

1994 · 1 incident

September 19, 1994 CA · Metal/Non-Metal gathering arm loader operator, loading machine operator, joy loader operator MACHINERY
Calmat Company · Caught in, under or between (Not Elsewhere Classified)

EE WAS WORKING WITH A HYDRAULIC PRESS TO REMOVE SHAFT FROM A BEARING. UNEXPECTED MOVEMENT OF THE JACK ASSEMBLY WHILE BEING INSTALLED INTO POSITION CAUSED EE'S FINGER TO LODGE BETWEEN THE BOLT AND PLATE ASSEMBLY CUTTING THE TIP OF HIS RIGHT FINGER.

1990 · 1 incident

September 28, 1990 CA · Metal/Non-Metal pumper OTHER
Calmat Company · (Not Elsewhere Classified)

GETTING TO CLOCK OUT HAD BLACKOUT

1989 · 2 incidents

November 8, 1989 CA · Metal/Non-Metal welder (shop) HANDTOOLS (NONPOWERED)
Calmat Company · Struck by... (Not Elsewhere Classified)

WRENCH WAS KNOCKED OUT OF EMP'S HAND WHEN BOLT CAME LOOSE AND HIT EMP IN MOUTH AND BROKE TWO FRONT TEETH.

January 26, 1989 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Calmat Company · Struck by... (Not Elsewhere Classified)

CLEARING ROCKS FROM CRUSHER GOT FOREIGN SUBSTANCE IN EYE.

1988 · 1 incident

June 17, 1988 CA · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
Calmat Company · Struck by falling object

WHILE BUILDING A CARPORT A RAFTER FELL OFF ITS SUPPORT HITTING EMPLOYEE IN THE HEAD

1987 · 3 incidents

October 16, 1987 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Calmat Company · Over-exertion in lifting objects

REMOVING ELEC B2XES FROM AN OLD BLDG.

August 3, 1987 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Calmat Company · Struck against stationary object

EMPLOYEE WAS AD4USTING BRAKES ON MIXER TRUCK. BRAKE SPOON SLIPPED AND FINGER HIT FRAME.

1986 · 1 incident

March 10, 1986 CA · Metal/Non-Metal electrician, lineman ELECTRICAL
Calmat Company · Flash burns (electric)

WORKING ON CONV9YOR 7 STARTING TO PUSH IN THE SAFETY BLADES ON THE FEEDER WHEN THE SAFETYS BLEW. CAUSING 3RD DEGREE BURNS.

1984 · 1 incident

August 2, 1984 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech EXPLOSIVES AND BREAKING AGENTS
Calmat Company · Struck by... (Not Elsewhere Classified)

NOT ENGAGED IN AUTHORIZED WORK ACTIVITY OF CONROCKS BUT WAS MAKING A BOMB & IT DETONATED & BLEW OFF HIS LEFT HAND.

For insurers, brokers, and safety consultants

The full compliance file on PALMDALE PLANT

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.