Mining Incidents

Blue Mountain Minerals PR LLC Metal/Non-Metal

Controlled by Portola Minerals Company
Paso Robles, San Luis Obispo County, CA  ·  Active
MSHA Mine ID: 0400099

Blue Mountain Minerals PR LLC has $186K in proposed MSHA penalties and $0 outstanding across 4 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
20
Years on record
1987–2026
Latest incident
Jan 2026
Compliance record
MSHA citations since 2000
256
citations
84
significant & substantial
$185,935
proposed penalties
$146,525
paid to date
79% of proposed penalties paid to date, a $39,410 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
73
inspections on record
1,752
inspection hours
14.6
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.
256 citations across 1,752 inspection hours.
Source: MSHA inspections data, updated weekly.

Blue Mountain Minerals PR LLC has $186K in proposed MSHA penalties and $0 outstanding across 4 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.
$186K
proposed penalties
$147K
current assessed
$147K
paid to date
$0
outstanding
255 assessments are final orders; 4 contested dockets.
As of the most recent assessment on 2026-04-28.
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 7,354 0 0 0.0
2025 Q3 7,178 1 0 139.3
2025 Q2 7,081 0 0 0.0
2025 Q1 6,973 0 0 0.0
2024 Q4 7,067 1 0 141.5
2024 Q3 7,016 3 1 427.6
2024 Q2 7,061 0 0 0.0
2024 Q1 6,444 2 0 310.4
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 6,700 0 0 0.0
2023 Q3 6,181 2 1 323.6
2023 Q2 5,499 0 0 0.0
2023 Q1 6,356 6 1 944.0
2022 Q4 7,438 0 0 0.0
2022 Q3 7,414 0 0 0.0
2022 Q2 7,229 6 1 830.0
2022 Q1 7,103 5 3 703.9
2021 Q4 7,073 0 0 0.0
2021 Q3 7,110 9 1 1265.8
2021 Q2 7,594 0 0 0.0
2021 Q1 7,253 0 0 0.0
2020 Q4 6,365 25 9 3927.7
2020 Q3 6,487 10 3 1541.5
2020 Q2 7,004 0 0 0.0
2020 Q1 6,228 19 7 3050.7
2019 Q4 6,386 0 0 0.0
2019 Q3 6,243 30 17 4805.4
2019 Q2 6,601 0 0 0.0
2019 Q1 5,913 1 1 169.1
2018 Q4 3,928 0 0 0.0
2018 Q3 5,465 0 0 0.0
2018 Q2 6,634 6 2 904.4
2018 Q1 4,928 0 0 0.0
2017 Q4 6,183 8 1 1293.9
2017 Q3 5,525 0 0 0.0
2017 Q2 5,949 4 1 672.4
2017 Q1 5,311 0 0 0.0
2016 Q4 4,887 5 0 1023.1
2016 Q3 4,987 0 0 0.0
2016 Q2 5,659 5 2 883.5
2016 Q1 4,024 2 0 497.0
2015 Q4 5,213 0 0 0.0
2015 Q3 5,128 0 0 0.0
2015 Q2 5,084 3 1 590.1
2015 Q1 4,938 0 0 0.0
2014 Q4 4,831 5 2 1035.0
2014 Q3 4,543 0 0 0.0
2014 Q2 4,753 4 0 841.6
2014 Q1 4,924 4 1 812.3
2013 Q4 6,405 0 0 0.0
2013 Q3 6,858 0 0 0.0
2013 Q2 7,245 4 0 552.1
2013 Q1 7,801 0 0 0.0
2012 Q4 7,231 4 2 553.2
2012 Q3 7,624 0 0 0.0
2012 Q2 8,641 5 2 578.6
2012 Q1 8,188 0 0 0.0
2011 Q4 8,676 5 1 576.3
2011 Q3 8,955 4 3 446.7
2011 Q2 8,058 0 0 0.0
2011 Q1 7,942 4 0 503.7
2010 Q4 8,959 0 0 0.0
2010 Q3 9,500 4 0 421.1
2010 Q2 7,377 0 0 0.0
2010 Q1 5,739 4 4 697.0
2009 Q4 8,533 0 0 0.0
2009 Q3 8,036 2 1 248.9
2009 Q2 7,183 1 0 139.2
2009 Q1 8,187 7 1 855.0
2008 Q4 9,995 0 0 0.0
2008 Q3 10,392 0 0 0.0
2008 Q2 9,409 3 2 318.8
2008 Q1 2,876 4 2 1390.8
2007 Q4 9,430 0 0 0.0
2007 Q3 9,542 0 0 0.0
2007 Q2 8,554 1 1 116.9
2007 Q1 7,211 0 0 0.0
2006 Q4 8,651 0 0 0.0
2006 Q3 9,720 6 3 617.3
2006 Q2 8,773 0 0 0.0
2006 Q1 8,182 5 0 611.1
2005 Q4 7,704 0 0 0.0
2005 Q3 8,308 0 0 0.0
2005 Q2 7,548 0 0 0.0
2005 Q1 7,219 1 1 138.5
2004 Q4 7,700 0 0 0.0
2004 Q3 8,040 3 0 373.1
2004 Q2 6,724 0 0 0.0
2004 Q1 5,927 5 1 843.6
2003 Q4 7,677 0 0 0.0
2003 Q3 7,389 0 0 0.0
2003 Q2 6,861 1 0 145.8
2003 Q1 6,150 3 1 487.8
2002 Q4 5,970 1 1 167.5
2002 Q3 6,105 2 0 327.6
2002 Q2 7,723 1 0 129.5
2002 Q1 5,288 0 0 0.0
2001 Q4 5,334 0 0 0.0
2001 Q3 6,343 0 0 0.0
2001 Q2 7,790 0 0 0.0
2001 Q1 6,822 4 1 586.3
2000 Q4 7,536 0 0 0.0
2000 Q3 7,798 0 0 0.0
2000 Q2 7,553 2 0 264.8
2000 Q1 5,586 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

20 on file

2026 · 1 incident

January 28, 2026 CA · Metal/Non-Metal plumber, pipefitter, millwright HANDLING OF MATERIALS
Blue Mountain Minerals PR LLC · Fall to the walkway or working surface

Miner clocked in from lunch and was using their phone while walking. There was a wheel chock out in open space that led to them tripping and the miner fell. The fall then apparently caused a fracture to the proximal end of the radius bone in the left arm.

2024 · 1 incident

May 31, 2024 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Blue Mountain Minerals PR LLC · Fall to the walkway or working surface

Miner was speed walking from one piece of equipment to another and tripped on a rock and fell, striking left knee and causing a laceration that required medical treatment.

2021 · 2 incidents

November 8, 2021 CA · Metal/Non-Metal grader operator, roadgrader operator POWERED HAULAGE
Blue Mountain Minerals PR LLC · Fall from machine

Miner was operating a CAT 12G grader on an incline, the engine stalled during operation. The miner removed seat belt and jumped off the piece of equipment. They landed on their feet but then slipped onto their buttocks thereby injuring their back.

March 24, 2021 CA · Metal/Non-Metal plumber, pipefitter, millwright HANDTOOLS (NONPOWERED)
Blue Mountain Minerals PR LLC · Struck by... (Not Elsewhere Classified)

Employee was cutting belting used to guard a conveyor with a box cutter knife. The knife slipped and EE lacerated EE's right hand.

2014 · 3 incidents

November 6, 2014 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Lime Mountain Company · Over-exertion (Not Elsewhere Classified)

Employee was tightening bolts on the Mill at our Screen Stone Plant when he felt a pain in his groin area.

November 2, 2014 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Lime Mountain Company · Fall to the walkway or working surface

Employee was responding to a fire at Screen Stone, he jumped out of the truck and grabbed two fire extinguishers, as he ran to the stairs he slipped in the mud and landed on his butt and back. Incident was not reported until 11/06/2014 because at the time he felt no injury.

March 12, 2014 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Lime Mountain Company · Over-exertion in lifting objects

Large rock fell onto the haul truck, employee tried to lift rock off by himself.

2013 · 1 incident

June 5, 2013 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Lime Mountain Company · Fall onto or against objects

Employee was sorting through a box of paperwork when a piece of paper fell on the ground the employee bent over to pick it up and his back went out causing him to fall forward and hit his head on the door. Employee was sent to the doctor for evaluation. No damage or impairment was caused.

2012 · 1 incident

September 20, 2012 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer OTHER
Lime Mountain Company · Bodily reaction, (Not Elsewhere Classified)

Working on a drain pipe and a swarm of bees erupted. Person was swinging his arms to keep the bees away and heard a loud pop in his shoulder. This person has been put on light duty due to both injuries

2009 · 1 incident

July 27, 2009 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Lime Mountain Company · Over-exertion (Not Elsewhere Classified)

Employee bent down to turn on water valve located approximately one foot from the ground. Twisted or tweaked his back in the process. EE is currently off work pending further medical evaluation and release from multiple doctors restrictions.

1998 · 2 incidents

August 3, 1998 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Lime Mountain Company · Fall from machine

WHILE GREASING LOADER, CLIMBED DOWN LOADER AND SLIPPED AND HURT RIGHT KNEE

January 19, 1998 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Lime Mountain Company · Over-exertion (Not Elsewhere Classified)

EE SQUATTED DOWN LOOKING AT RETURN ROLLERS AND WHILE CLEANING, FELT PAIN.

1997 · 1 incident

July 28, 1997 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer STEPPING OR KNEELING ON OBJECT
Lime Mountain Company · Struck against stationary object

WHILE CLEANING AND GREASING HAMMERMILL AT CRUSHER, EMPLOYEE SLIPPED ON ANGLE IRON LOST FOOTING AND TWISTED HIS ANKLE.

1994 · 1 incident

June 21, 1994 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Lime Mountain Company · Over-exertion (Not Elsewhere Classified)

JERRY HELPED CHAGING GRATES IN HAMMERMILL AND NO COMPLAINTS.

1993 · 2 incidents

May 26, 1993 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Lime Mountain Company · Over-exertion (Not Elsewhere Classified)

ON GOIN INJURY FROM REPEATED TRAUMA. INJURY NOT ON IN 1990.

May 13, 1993 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Lime Mountain Company · Fall to the walkway or working surface

TRIMMING A TREE BRANCH & EMPLOYEE FELL TO THE GROUND

1989 · 3 incidents

December 15, 1989 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
Lime Mountain Company · Struck by... (Not Elsewhere Classified)

HOLDING ON TO ROCK AND HIT THIRD FINGER OPERATING CRUSHER IN PIT.

December 11, 1989 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Lime Mountain Company · Over-exertion in lifting objects

EE BENT OVER TO PICK UP MOTOR CAME BACK UP AND TWISTED HIS BACK AS HE TURNED AROUND.

1987 · 1 incident

May 31, 1987 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Lime Mountain Company · Struck by falling object

OPERATING CRUSH9R AND BOARD FELL ON FINGER.

For insurers, brokers, and safety consultants

The full compliance file on Blue Mountain Minerals PR LLC

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.