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.
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.
Of $75K in penalties contested before the Commission, $35K was upheld in final decisions.
As of the most recent assessment on 2026-04-28.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
ⓘShares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
ⓘContesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
10citations taken to the federal commission · 4% of citations on record
Settled
7 · 70%
Stood as issued
3 · 30%
86%
S&S designation survived the contest
ⓘCounts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 7 decided S&S contests · industry: 79%
53%
Penalty reduction in decided contests
$75K proposed, $35K after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2021-11-03.
Contested penalties
ⓘA reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Health sampling
ⓘA sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.
Metal and nonmetal contaminants (personal samples)
ⓘMany samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.
Last sampled: 2026-02-10
0%
of limit-tested samples over the exposure limit
18
samples
7
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz7
Respirable dust, <.1mg6
Unlisted Particulate, respirable, <1% Qtz3
Nuisance dust, respirable, <1% Qtz2
Show the individual readings (18)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-02-10
Quartz, respirable, >1% Qtz
0.29
Crusher Oper/Worker
2026-02-10
Quartz, respirable, >1% Qtz
1
3.13
0.32
Front-end Loader Operator
2023-02-17
Quartz, respirable, >1% Qtz
0.57
Crusher Oper/Worker
2023-02-17
Nuisance dust, respirable, <1% Qtz
0.35
10
0.04
Crusher Oper/Worker
2022-01-05
Unlisted Particulate, respirable, <1% Qtz
0.39
Hammer Mill Operator
2020-07-23
Unlisted Particulate, respirable, <1% Qtz
0.13
Crusher Oper/Worker
2020-07-23
Unlisted Particulate, respirable, <1% Qtz
0.36
Hammer Mill Operator
2015-05-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2015-05-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2010-08-10
Nuisance dust, respirable, <1% Qtz
0.6
10
0.06
Front-end Loader Operator
2010-08-10
Respirable dust, <.1mg
0
Truck Driver
2005-06-07
Quartz, respirable, >1% Qtz
0.19
1.54
0.12
Mechanic
2005-06-07
Respirable dust, <.1mg
0
Front-end Loader Operator
2005-06-07
Quartz, respirable, >1% Qtz
0.76
3.04
0.25
Dry Screen Plant Operator
2005-06-02
Respirable dust, <.1mg
0
Truck Driver
2005-06-02
Respirable dust, <.1mg
0
Bulldozer Operator
2005-06-02
Quartz, respirable, >1% Qtz
0.34
0.79
0.43
Front-end Loader Operator
2005-06-02
Quartz, respirable, >1% Qtz
0.14
0.84
0.17
Truck Driver
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Blue Mountain Minerals PR LLC recorded 0.00 reportable injury cases per 100 full-time workers in 2025.
Injury rate, 2025
ⓘThis rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In California, metal and nonmetal mining averaged 1.42 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year
total case rate
days-away
fatal
2025 *
0.00
0.00
0.000
2024 *
7.25
7.25
0.000
2023 *
0.00
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
13.78
6.89
0.000
2020 *
0.00
0.00
0.000
2019 *
0.00
0.00
0.000
2018 *
0.00
0.00
0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
14
2025
13
2024
14
2023
13
2022
12
2021
11
2020
10
2019
11
2018
10
2017
10
2016
8
2015
8
2014
8
2013
13
2012
14
2011
15
2010
16
2009
14
2008
17
2007
16
2006
15
2005
14
2004
13
2003
12
2002
13
2001
14
2000
11
Source: MSHA quarterly employment and production, updated weekly.
Blue Mountain Minerals PR LLC sits in San Luis Obispo County, California, where the Census mining category is 0.2% of county employment.
Local economic context
ⓘCounty figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
San Luis Obispo County, California · Population 281,486
0.2%
Mining share of county employment
$93,398
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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
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, 2024CA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerSLIP OR FALL OF PERSON
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, 2021CA · Metal/Non-Metalgrader operator, roadgrader operatorPOWERED HAULAGE
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.
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, 2014CA · Metal/Non-Metalhaul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driverHANDLING OF MATERIALS
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, 2012CA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerOTHER
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, 2009CA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDLING OF MATERIALS
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, 1998CA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON