Mining Incidents
Search Operators Mines Alerts Research Controllers Fatalgrams About
English Español
← Back to search

Black Rock Mine: 188 MSHA citations Metal/Non-Metal

Controlled by Saint-Gobain
St. George, Mohave County, AZ  ·  Active
MSHA Mine ID: 0202145

Black Rock Mine has $21K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.

Watch this mine

Email me when a new MSHA incident is filed at Black Rock Mine.

Fatalities
0
Total incidents
13
Years on record
1991–2026
Latest incident
Mar 2026
Compliance record
MSHA citations since 2000
188
citations
23
significant & substantial
$20,892
proposed penalties
$20,719
paid to date
99% of proposed penalties paid to date, a $173 gap.
Source: MSHA violations data, updated weekly.
See Western Mining and Minerals, Inc.'s full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
70
inspections on record
1,438
inspection hours
13.1
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.
188 citations across 1,438 inspection hours.
Source: MSHA inspections data, updated weekly.

Black Rock Mine has $21K 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.
$21K
proposed penalties
$21K
current assessed
$21K
paid to date
$0
outstanding
185 assessments are final orders; 1 contested dockets.
Of $873 in penalties contested before the Commission, $700 was upheld in final decisions.
As of the most recent assessment on 2026-02-04.
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.
12.2%
significant & substantial
3.7%
high negligence or reckless
12.2%
reasonably likely or greater
56.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 18.6% low, 77.7% moderate, 3.7% high, 0.0% reckless.
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.
1 citations taken to the federal commission · 1% of citations on record
  • Settled 1 · 100%
100%
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 1 decided S&S contests · industry: 79%
20%
Penalty reduction in decided contests
$873 proposed, $700 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 2013-09-16.
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.
Docket Decision Judge Year Proposed / upheld
WEST 2013-1147M Settlement Miller 2014 $873 → $700
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.
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: 2024-02-06
55%
of limit-tested samples over the exposure limit
33
samples
20
limit-tested
Most sampled contaminants
  • Nuisance dust, total, <1% Qtz1911 over
  • Respirable dust, <.1mg8
  • Unlisted Particulate, respirable, <1% Qtz4
  • Quartz, respirable, >1% Qtz1
Show the individual readings (33)
Date Contaminant Concentration Limit Conc / limit Occupation
2003-04-10 Nuisance dust, total, <1% Qtz 15.11 10 1.51 Backhoe Operator
2003-04-10 Nuisance dust, total, <1% Qtz 333.19 10 33.32 Bulldozer Operator
2002-11-20 Nuisance dust, total, <1% Qtz 20.29 10 2.03 Truck Driver
2002-11-20 Nuisance dust, total, <1% Qtz 31.95 10 3.20 Front-end Loader Operator
2002-05-01 Nuisance dust, total, <1% Qtz 25.02 10 2.50 Truck Driver
2002-05-01 Nuisance dust, total, <1% Qtz 50.72 10 5.07 Front-end Loader Operator
2002-05-01 Nuisance dust, total, <1% Qtz 28.58 10 2.86 Backhoe Operator
2002-05-01 Nuisance dust, total, <1% Qtz 47.2 10 4.72 Truck Driver
2002-04-25 Nuisance dust, total, <1% Qtz 13.48 10 1.35 Drill Helper
2002-04-25 Nuisance dust, total, <1% Qtz 16.42 10 1.64 Drill Helper
2002-04-25 Nuisance dust, total, <1% Qtz 25.68 10 2.57 Drill Helper
2024-02-06 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2024-02-06 Respirable dust, <.1mg 0 Crusher Oper/Worker
2021-04-21 Respirable dust, <.1mg 0 Truck Driver
2019-03-28 Respirable dust, <.1mg 0 Mechanic
2019-03-28 Unlisted Particulate, respirable, <1% Qtz 0.15 Crusher Oper/Worker
2014-05-20 Quartz, respirable, >1% Qtz 0.87 1.01 0.86 Bulldozer Operator
2010-03-03 Respirable dust, <.1mg 0 Truck Driver
2010-03-03 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-03-03 Respirable dust, <.1mg 0 Truck Driver
2003-11-19 Nuisance dust, total, <1% Qtz 1.39 10 0.14 Bulldozer Operator
2003-04-10 Nuisance dust, total, <1% Qtz 8.84 10 0.88 Truck Driver
2003-04-10 Nuisance dust, total, <1% Qtz 6.82 10 0.68 Front-end Loader Operator
2002-11-20 Nuisance dust, total, <1% Qtz 5.49 10 0.55 Truck Driver
2002-11-20 Nuisance dust, total, <1% Qtz 6.13 10 0.61 Bulldozer Operator
2002-11-20 Nuisance dust, total, <1% Qtz 1.29 10 0.13 Truck Driver
2002-11-20 Nuisance dust, total, <1% Qtz 3.78 10 0.38 Truck Driver
2002-11-20 Nuisance dust, total, <1% Qtz 8.26 10 0.83 Truck Driver
2002-04-25 Unlisted Particulate, total, <1% Qtz 4.74 Bulldozer Operator
2000-09-12 Unlisted Particulate, respirable, <1% Qtz 0.18 Crusher Oper/Worker
2000-09-12 Respirable dust, <.1mg 0 Utility Man
2000-09-12 Unlisted Particulate, respirable, <1% Qtz 3.29 Drill Operator, Rotary Air
2000-09-12 Unlisted Particulate, respirable, <1% Qtz 0.62 Crusher Oper/Worker
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.

Black Rock Mine recorded 8.54 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.
8.54
total case rate
0.00
days-away rate
0.000
fatality rate
Above 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 Arizona, metal and nonmetal mining averaged 1.81 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 * 8.54 0.00 0.000
2024 * 0.00 0.00 0.000
2023 * 0.00 0.00 0.000
2022 * 9.74 0.00 0.000
2018 * 0.00 0.00 0.000
2017 * 0.00 0.00 0.000
2016 * 0.00 0.00 0.000
2015 * 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.
Ownership history
  1. Philadelphia Development Corp Inc 1983 to 1985
  2. Zonah Corp 1985 to 1989
  3. D G Jones & Son Company 1989 to 1989
  4. Western Gypsum Corp 1990 to 2000
  5. Western Mining & Minerals Inc 2000 to 2002
  6. BPB Gypsum, Inc. 2002 to 2005
  7. Western Mining and Minerals, Inc. 2005 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 13
2025 12
2024 12
2023 13
2022 11
2021 9
2020 9
2019 11
2018 12
2017 12
2016 13
2015 13
2014 13
2013 13
2012 13
2011 14
2010 15
2009 17
2008 25
2007 29
2006 29
2005 23
2004 21
2003 23
2002 22
2001 22
2000 26
Source: MSHA quarterly employment and production, updated weekly.

Black Rock Mine sits in Mohave County, Arizona, where the Census mining category is 0.7% 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.
Mohave County, Arizona · Population 217,420
0.7%
Mining share of county employment
$55,799
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
Quarter Hours worked Citations S&S Per 1M hrs
2026 Q2 6,407 0 0 0.0
2026 Q1 6,263 1 0 159.7
2025 Q4 5,708 0 0 0.0
2025 Q3 6,168 0 0 0.0
2025 Q2 5,982 2 0 334.3
2025 Q1 5,555 0 0 0.0
2024 Q4 5,283 0 0 0.0
2024 Q3 6,262 0 0 0.0
Show 97 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 6,099 0 0 0.0
2024 Q1 6,245 1 0 160.1
2023 Q4 5,391 0 0 0.0
2023 Q3 6,242 2 0 320.4
2023 Q2 6,252 0 0 0.0
2023 Q1 6,141 0 0 0.0
2022 Q4 4,854 0 0 0.0
2022 Q3 5,355 0 0 0.0
2022 Q2 5,316 0 0 0.0
2022 Q1 5,000 0 0 0.0
2021 Q4 3,687 0 0 0.0
2021 Q3 4,480 0 0 0.0
2021 Q2 4,615 4 0 866.7
2021 Q1 4,623 2 0 432.6
2020 Q4 3,460 0 0 0.0
2020 Q3 3,820 0 0 0.0
2020 Q2 4,116 0 0 0.0
2020 Q1 4,192 0 0 0.0
2019 Q4 3,790 0 0 0.0
2019 Q3 4,006 2 0 499.3
2019 Q2 4,509 0 0 0.0
2019 Q1 5,464 3 0 549.0
2018 Q4 4,661 0 0 0.0
2018 Q3 5,538 0 0 0.0
2018 Q2 5,350 0 0 0.0
2018 Q1 5,365 0 0 0.0
2017 Q4 4,281 0 0 0.0
2017 Q3 4,678 0 0 0.0
2017 Q2 5,728 1 0 174.6
2017 Q1 5,914 0 0 0.0
2016 Q4 4,526 0 0 0.0
2016 Q3 6,330 0 0 0.0
2016 Q2 6,195 2 0 322.8
2016 Q1 6,614 0 0 0.0
2015 Q4 5,262 0 0 0.0
2015 Q3 6,628 0 0 0.0
2015 Q2 6,352 1 0 157.4
2015 Q1 5,942 0 0 0.0
2014 Q4 5,411 4 1 739.2
2014 Q3 6,309 0 0 0.0
2014 Q2 6,427 2 0 311.2
2014 Q1 6,941 3 1 432.2
2013 Q4 5,416 0 0 0.0
2013 Q3 6,342 0 0 0.0
2013 Q2 5,794 3 0 517.8
2013 Q1 6,677 0 0 0.0
2012 Q4 5,835 6 1 1028.3
2012 Q3 6,620 1 0 151.1
2012 Q2 5,647 0 0 0.0
2012 Q1 6,763 3 0 443.6
2011 Q4 4,613 0 0 0.0
2011 Q3 6,364 0 0 0.0
2011 Q2 6,525 0 0 0.0
2011 Q1 6,969 0 0 0.0
2010 Q4 5,566 1 0 179.7
2010 Q3 7,191 0 0 0.0
2010 Q2 7,562 0 0 0.0
2010 Q1 7,222 1 0 138.5
2009 Q4 6,334 0 0 0.0
2009 Q3 8,359 1 0 119.6
2009 Q2 8,879 0 0 0.0
2009 Q1 9,212 0 0 0.0
2008 Q4 10,062 0 0 0.0
2008 Q3 11,992 0 0 0.0
2008 Q2 12,599 4 0 317.5
2008 Q1 12,803 0 0 0.0
2007 Q4 11,605 0 0 0.0
2007 Q3 14,082 0 0 0.0
2007 Q2 15,223 0 0 0.0
2007 Q1 14,185 0 0 0.0
2006 Q4 14,625 0 0 0.0
2006 Q3 17,468 3 0 171.7
2006 Q2 18,207 0 0 0.0
2006 Q1 17,051 2 1 117.3
2005 Q4 14,530 0 0 0.0
2005 Q3 16,225 0 0 0.0
2005 Q2 11,952 0 0 0.0
2005 Q1 11,709 0 0 0.0
2004 Q4 11,241 3 0 266.9
2004 Q3 15,211 2 0 131.5
2004 Q2 14,385 0 0 0.0
2004 Q1 13,838 0 0 0.0
2003 Q4 13,580 3 0 220.9
2003 Q3 16,172 0 0 0.0
2003 Q2 14,425 2 0 138.6
2003 Q1 17,357 0 0 0.0
2002 Q4 15,285 0 0 0.0
2002 Q2 16,663 10 0 600.1
2002 Q1 12,958 0 0 0.0
2001 Q4 13,229 2 0 151.2
2001 Q3 13,871 1 0 72.1
2001 Q2 13,662 0 0 0.0
2001 Q1 14,180 5 0 352.6
2000 Q4 14,100 0 0 0.0
2000 Q3 13,948 9 4 645.3
2000 Q2 14,900 0 0 0.0
2000 Q1 14,520 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

13 on file

2026 · 1 incident

March 19, 2026 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Western Mining and Minerals, Inc. · Caught in, under or between a moving and a stationary object

The maintenance employee was lifting a section of cutting-edge steel using a pry bar. During this process, the cutting edge shifted unexpectedly, pinching EE's finger between the edge and the bolt. This resulted in a small external laceration on the outside of EE's finger.

2025 · 1 incident

March 3, 2025 AZ · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker HANDLING OF MATERIALS
Western Mining and Minerals, Inc. · Over-exertion (Not Elsewhere Classified)

Employee started job at around 12 Noon, the job was to replace the flashing on belt 3. Employee locked out the belt & tried to start, after test employee grabbed the tools required to do the job, entered the manlift, put it into position & started removing the bolts on the guard. When removing employee felt pop in right shoulder. Reported it to the Mine Manager & Safety Manager

2022 · 1 incident

September 16, 2022 AZ · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Western Mining and Minerals, Inc. · Fall onto or against objects

While installing new wipers on the tail-end of the conveyor belt miner lost balance and bumped into the cover bracket receiving cut to the left arm.

2011 · 1 incident

2006 · 1 incident

June 21, 2006 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Western Mining and Minerals, Inc. · Caught in, under or between (Not Elsewhere Classified)

Maintenance employees removing the right rear leaf spring from a lube truck. Spring had been unbolted and was being lifted out by 3 employees. The employee at the edge of the truck was told to let go. The spring rolled on its side, pinching another employees small finger causing a small cut requiring two stiches.

2005 · 1 incident

July 1, 2005 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Western Mining and Minerals, Inc. · Struck by... (Not Elsewhere Classified)

Removing windshield from truck. Cut left index finger with razor knife. Didn't file this report due to lack of knowledge - Accident was reported to Workers Compensation Fund of Utah.

2004 · 2 incidents

October 28, 2004 AZ · Metal/Non-Metal rock driller MACHINERY
BPB Gypsum, Inc. · Struck by falling object

DRILL CENTRALIZER MALFUNCTIONED ALLOWING DRILL STEEL TO DROP. THE DRILL STEEL WAS BEING LIFTED AND ALIGNED INTO THE CENTRALIZER WHEN IT SLIPPED THROUGH THE CENTRALIZER AND A RESTRAINING ROPE.

May 3, 2004 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
BPB Gypsum, Inc. · Over-exertion (Not Elsewhere Classified)

EMPLOYEE STATES: WHILE CLIMBING DOWN FROM SERVICE TRUCK #TR02-025, HE STEPPED ONTO UNEVEN GROUND CAUSING HIM TO TWIST HIS ANKLE.

1995 · 2 incidents

July 18, 1995 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Western Gypsum Corp · Caught in, under or between a moving and a stationary object

HE SMASHED HIS FINGER AND WENT TO THE DR.

June 16, 1995 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Western Gypsum Corp · Fall onto or against objects

EE WALKING OFF HILL LOST FOOTING, CUT KNEECAP AND HAD TO HAVE STITCHES.

1991 · 3 incidents

October 25, 1991 AZ · Metal/Non-Metal pumper MACHINERY
Western Gypsum Corp · Caught in, under or between (Not Elsewhere Classified)

WORKING ON WELDER HAD SIDE PANEL OFF DID NOT SHUT OFF MOTOR, PUT L HAND IN FAN CUTTING OFF L INDEX FINGER

September 4, 1991 AZ · Metal/Non-Metal superintendent STRIKING OR BUMPING
Western Gypsum Corp · Struck against stationary object

WAS WALKING PAST FRONTEND LOADER AND HIT ELBOW ON COUNTER WEIGHT BROKE OFF BONE SPUR AND ELBOW JOINT.