RED MOUNTAIN MINING, INC. · Rubbed or abraded
Miner was unloading screens - glove on right hand snagged and caused sharp screen end to lacerate right ring finger.
Mesa Mine: 173 MSHA citations Metal/Non-Metal
Mesa Mine has $47K in proposed MSHA penalties and $0 outstanding across 7 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 13
- Years on record
- 1993–2024
- Latest incident
- Oct 2024
Compliance record
MSHA citations since 2000
173
citations
37
significant & substantial
$47,127
proposed penalties
$44,628
paid to date
95% of proposed penalties paid to date, a $2,499 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
71
inspections on record
919
inspection hours
n/a
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.Rate withheld: 919 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Mesa Mine has $47K in proposed MSHA penalties and $0 outstanding across 7 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.$47K
proposed penalties
$45K
current assessed
$45K
paid to date
$0
outstanding
173 assessments are final orders; 7 contested dockets.
Of $9K in penalties contested before the Commission, $7K was upheld in final decisions.
As of the most recent assessment on 2026-05-04.
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.21.4%
significant & substantial
0.6%
high negligence or reckless
26.6%
reasonably likely or greater
59.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 8.7% low, 90.8% moderate, 0.6% 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.
13
citations taken to the federal commission · 8% of citations on record
- Settled 13 · 100%
60%
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 5 decided S&S contests · industry: 79%
13%
Penalty reduction in decided contests
$6K proposed, $5K 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 2013-10-17.
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 2014-23M | Settlement | Miller | 2014 | $5K → $5K |
| WEST20020107M | Settlement | Hodgdon | 2002 | $2K → $1K |
| WEST20000579M | Settlement | Hodgdon | 2000 | $1K → $220 |
| WEST 2006-332M | Settlement | Lesnick | 2006 | $570 → $360 |
| WEST20020108M | Settlement | Hodgdon | 2002 | $370 → $220 |
| WEST20010612M | Settlement | Melick | 2001 | $150 → $55 |
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: 2024-04-03
ⓘ
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.0%
of limit-tested samples over the exposure limit
21
samples
5
limit-tested
Most sampled contaminants
- Respirable dust, <.1mg16
- Quartz, respirable, >1% Qtz5
Show the individual readings (21)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2024-04-03 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2024-04-03 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2024-04-03 | Respirable dust, <.1mg | 0 | Screen/Scalper Operator | ||
| 2022-12-13 | Respirable dust, <.1mg | 0 | Crusher Oper/Worker | ||
| 2022-12-13 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2020-10-27 | Respirable dust, <.1mg | 0 | Crusher Oper/Worker | ||
| 2020-10-27 | Quartz, respirable, >1% Qtz | 0.23 | 0.57 | 0.40 | Front-end Loader Operator |
| 2019-02-26 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2019-02-26 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2019-02-26 | Quartz, respirable, >1% Qtz | 0.4 | 0.55 | 0.73 | Crusher Oper/Worker |
| 2018-01-17 | Respirable dust, <.1mg | 0 | Crusher Oper/Worker | ||
| 2018-01-17 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2014-05-28 | Quartz, respirable, >1% Qtz | 0.41 | 0.73 | 0.56 | Crusher Oper/Worker |
| 2011-10-04 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2011-10-04 | Quartz, respirable, >1% Qtz | 0.14 | 0.56 | 0.25 | Crusher Oper/Worker |
| 2010-05-06 | Quartz, respirable, >1% Qtz | 0.18 | 0.8 | 0.23 | Crusher Oper/Worker |
| 2010-05-06 | Respirable dust, <.1mg | 0 | Crusher Oper/Worker | ||
| 2010-05-06 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2002-07-17 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2002-07-17 | Respirable dust, <.1mg | 0 | Mechanic | ||
| 2002-07-17 | Respirable dust, <.1mg | 0 | 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.
Mesa Mine recorded 9.30 reportable injury cases per 100 full-time workers in 2021.
Injury rate, 2021
ⓘ
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.9.30
total case rate
0.00
days-away rate
0.000
fatality rate
Above average. The US metal and nonmetal mining average was 1.87 and the all-US-mining average was 2.19 cases per 100 workers.
In Arizona, metal and nonmetal mining averaged 2.33 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 |
|---|---|---|---|
| 2021 * | 9.30 | 0.00 | 0.000 |
| 2007 * | 0.00 | 0.00 | 0.000 |
| 2002 * | 0.00 | 0.00 | 0.000 |
| 2000 * | 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
- RED MOUNTAIN MINING, INC. 1950 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2026 | 9 |
| 2025 | 10 |
| 2024 | 9 |
| 2023 | 9 |
| 2022 | 10 |
| 2021 | 11 |
| 2020 | 10 |
| 2019 | 9 |
| 2018 | 9 |
| 2017 | 9 |
| 2016 | 9 |
| 2015 | 10 |
| 2014 | 9 |
| 2013 | 7 |
| 2012 | 7 |
| 2011 | 9 |
| 2010 | 8 |
| 2009 | 10 |
| 2008 | 10 |
| 2007 | 12 |
| 2006 | 13 |
| 2005 | 10 |
| 2004 | 10 |
| 2003 | 10 |
| 2002 | 23 |
| 2001 | 27 |
| 2000 | 29 |
Source: MSHA quarterly employment and production, updated weekly.
Mesa Mine sits in Maricopa County, Arizona, 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.Maricopa County, Arizona · Population 4,491,987
0.2%
Mining share of county employment
$85,518
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 | 3,740 | 2 | 0 | 534.8 |
| 2026 Q1 | 3,734 | 0 | 0 | 0.0 |
| 2025 Q4 | 3,928 | 0 | 0 | 0.0 |
| 2025 Q3 | 4,504 | 1 | 1 | 222.0 |
| 2025 Q2 | 4,148 | 0 | 0 | 0.0 |
| 2025 Q1 | 4,431 | 0 | 0 | 0.0 |
| 2024 Q4 | 4,399 | 0 | 0 | 0.0 |
| 2024 Q3 | 4,439 | 0 | 0 | 0.0 |
Show 97 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 4,227 | 1 | 0 | 236.6 |
| 2024 Q1 | 4,281 | 0 | 0 | 0.0 |
| 2023 Q4 | 3,733 | 1 | 0 | 267.9 |
| 2023 Q3 | 4,586 | 0 | 0 | 0.0 |
| 2023 Q2 | 4,093 | 10 | 0 | 2443.2 |
| 2023 Q1 | 4,394 | 0 | 0 | 0.0 |
| 2022 Q4 | 3,808 | 4 | 1 | 1050.4 |
| 2022 Q3 | 4,767 | 0 | 0 | 0.0 |
| 2022 Q2 | 4,767 | 0 | 0 | 0.0 |
| 2022 Q1 | 5,257 | 0 | 0 | 0.0 |
| 2021 Q4 | 4,833 | 3 | 0 | 620.7 |
| 2021 Q3 | 5,401 | 0 | 0 | 0.0 |
| 2021 Q2 | 5,399 | 2 | 1 | 370.4 |
| 2021 Q1 | 5,869 | 0 | 0 | 0.0 |
| 2020 Q4 | 4,370 | 0 | 0 | 0.0 |
| 2020 Q3 | 5,258 | 0 | 0 | 0.0 |
| 2020 Q2 | 5,261 | 0 | 0 | 0.0 |
| 2020 Q1 | 4,114 | 1 | 0 | 243.1 |
| 2019 Q4 | 4,590 | 0 | 0 | 0.0 |
| 2019 Q3 | 3,468 | 0 | 0 | 0.0 |
| 2019 Q2 | 4,363 | 1 | 0 | 229.2 |
| 2019 Q1 | 3,840 | 4 | 1 | 1041.7 |
| 2018 Q4 | 4,489 | 0 | 0 | 0.0 |
| 2018 Q3 | 4,047 | 0 | 0 | 0.0 |
| 2018 Q2 | 4,464 | 0 | 0 | 0.0 |
| 2018 Q1 | 3,702 | 1 | 0 | 270.1 |
| 2017 Q4 | 4,336 | 0 | 0 | 0.0 |
| 2017 Q3 | 3,735 | 0 | 0 | 0.0 |
| 2017 Q2 | 4,791 | 2 | 1 | 417.4 |
| 2017 Q1 | 3,792 | 0 | 0 | 0.0 |
| 2016 Q4 | 4,194 | 1 | 0 | 238.4 |
| 2016 Q3 | 3,690 | 0 | 0 | 0.0 |
| 2016 Q2 | 4,930 | 6 | 2 | 1217.0 |
| 2016 Q1 | 4,005 | 0 | 0 | 0.0 |
| 2015 Q4 | 4,135 | 7 | 2 | 1692.9 |
| 2015 Q3 | 4,201 | 8 | 2 | 1904.3 |
| 2015 Q2 | 3,437 | 0 | 0 | 0.0 |
| 2015 Q1 | 3,627 | 0 | 0 | 0.0 |
| 2014 Q4 | 4,251 | 0 | 0 | 0.0 |
| 2014 Q3 | 4,201 | 0 | 0 | 0.0 |
| 2014 Q2 | 2,946 | 13 | 6 | 4412.8 |
| 2014 Q1 | 2,873 | 1 | 1 | 348.1 |
| 2013 Q4 | 3,090 | 0 | 0 | 0.0 |
| 2013 Q3 | 3,220 | 7 | 3 | 2173.9 |
| 2013 Q2 | 2,688 | 0 | 0 | 0.0 |
| 2013 Q1 | 2,568 | 0 | 0 | 0.0 |
| 2012 Q4 | 2,016 | 10 | 3 | 4960.3 |
| 2012 Q3 | 2,594 | 0 | 0 | 0.0 |
| 2012 Q2 | 2,047 | 3 | 1 | 1465.6 |
| 2012 Q1 | 2,278 | 0 | 0 | 0.0 |
| 2011 Q4 | 2,593 | 3 | 1 | 1157.0 |
| 2011 Q3 | 3,169 | 0 | 0 | 0.0 |
| 2011 Q2 | 2,832 | 3 | 1 | 1059.3 |
| 2011 Q1 | 2,189 | 0 | 0 | 0.0 |
| 2010 Q4 | 2,393 | 7 | 0 | 2925.2 |
| 2010 Q3 | 3,199 | 0 | 0 | 0.0 |
| 2010 Q2 | 2,793 | 4 | 0 | 1432.2 |
| 2010 Q1 | 2,937 | 0 | 0 | 0.0 |
| 2009 Q4 | 2,737 | 3 | 1 | 1096.1 |
| 2009 Q3 | 3,395 | 0 | 0 | 0.0 |
| 2009 Q2 | 3,893 | 3 | 0 | 770.6 |
| 2009 Q1 | 3,181 | 0 | 0 | 0.0 |
| 2008 Q4 | 3,765 | 0 | 0 | 0.0 |
| 2008 Q3 | 3,982 | 0 | 0 | 0.0 |
| 2008 Q2 | 4,170 | 8 | 2 | 1918.5 |
| 2008 Q1 | 3,742 | 2 | 0 | 534.5 |
| 2007 Q4 | 4,316 | 0 | 0 | 0.0 |
| 2007 Q3 | 5,273 | 0 | 0 | 0.0 |
| 2007 Q2 | 6,276 | 1 | 0 | 159.3 |
| 2007 Q1 | 4,992 | 0 | 0 | 0.0 |
| 2006 Q4 | 6,294 | 3 | 1 | 476.6 |
| 2006 Q3 | 5,055 | 0 | 0 | 0.0 |
| 2006 Q2 | 4,507 | 0 | 0 | 0.0 |
| 2006 Q1 | 3,136 | 8 | 1 | 2551.0 |
| 2005 Q4 | 4,114 | 0 | 0 | 0.0 |
| 2005 Q3 | 3,693 | 0 | 0 | 0.0 |
| 2005 Q2 | 4,326 | 0 | 0 | 0.0 |
| 2005 Q1 | 3,729 | 0 | 0 | 0.0 |
| 2004 Q4 | 4,202 | 2 | 0 | 476.0 |
| 2004 Q3 | 4,020 | 0 | 0 | 0.0 |
| 2004 Q2 | 4,930 | 0 | 0 | 0.0 |
| 2004 Q1 | 3,419 | 0 | 0 | 0.0 |
| 2003 Q4 | 5,577 | 2 | 0 | 358.6 |
| 2003 Q3 | 5,222 | 0 | 0 | 0.0 |
| 2003 Q2 | 5,053 | 0 | 0 | 0.0 |
| 2003 Q1 | 4,099 | 0 | 0 | 0.0 |
| 2002 Q4 | 12,160 | 0 | 0 | 0.0 |
| 2002 Q3 | 10,935 | 3 | 0 | 274.3 |
| 2002 Q2 | 9,093 | 0 | 0 | 0.0 |
| 2002 Q1 | 9,775 | 0 | 0 | 0.0 |
| 2001 Q3 | 12,865 | 0 | 0 | 0.0 |
| 2001 Q2 | 12,065 | 26 | 5 | 2155.0 |
| 2001 Q1 | 14,578 | 0 | 0 | 0.0 |
| 2000 Q4 | 12,752 | 2 | 0 | 156.8 |
| 2000 Q3 | 14,832 | 0 | 0 | 0.0 |
| 2000 Q2 | 12,867 | 4 | 0 | 310.9 |
| 2000 Q1 | 14,321 | 0 | 0 | 0.0 |
No fatalities recorded at this mine.
Reportable incidents
13 on file2024 · 2 incidents
RED MOUNTAIN MINING, INC. · Struck by flying object
MINER WAS USING A HAMMER TO REMOVE A RIPPER POINT. MINER STRUCK THE TOP OF THE RIPPER POINT CAUSING A PIECE OF THE EDGE TO SHEAR OFF AND BECOME A FLYING OBJECT. FOREIGN BODY ENTERED THE MINER'S RIGHT KNEE, LODGING JUST BEHIND THE KNEE REQUIRING SURGERY AND OVERNIGHT HOSPITALIZATION.
2023 · 1 incident
January 17, 2023
AZ · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
HANDTOOLS (NONPOWERED)
RED MOUNTAIN MINING, INC. · Fall onto or against objects
MINER WAS PRYING A VIBRATORY HOPPER WITH A BAR TO REMOVE ROCKS. MINER WAS STANDING ON A LOOSE MOUND OF DIRT WHEN THE BAR SLIPPED CAUSING MINER TO LOSE FOOTING. MINER WAS WORKING INSIDE THE CRUSHER HUT STRUCTURE AND TRIED TO STEP THROUGH FRAME ONTO LOOSE MATERIAL AND FELL. MINER STRUCK CHEEK AND CHIN AGAINST THE STRUCTURAL STEEL.
2021 · 1 incident
March 25, 2021
AZ · Metal/Non-Metal
front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator
HANDLING OF MATERIALS
RED MOUNTAIN MINING, INC. · Struck by flying object
Had been drilling earlier @ 8 am. Later that afternoon wiped their brow and a metal shaving fell into eye.
2019 · 1 incident
August 7, 2019
AZ · Metal/Non-Metal
front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator
DISORDERS (PHYSICAL AGENTS)
RED MOUNTAIN MINING, INC. · Contact with heat
Heat related dizziness, heat exhaustion
2011 · 1 incident
February 24, 2011
AZ · Metal/Non-Metal
maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech
SLIP OR FALL OF PERSON
RED MOUNTAIN MINING, INC. · Over-exertion (Not Elsewhere Classified)
Employee twisted left knee working on plant.
2008 · 1 incident
August 4, 2008
AZ · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
SLIP OR FALL OF PERSON
RED MOUNTAIN MINING, INC. · Over-exertion (Not Elsewhere Classified)
Stepping from one elevation to another, loose gravel gave way and employee slipped causing a sprain to his left wrist and right kneee.
2007 · 1 incident
August 20, 2007
AZ · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
HANDLING OF MATERIALS
RED MOUNTAIN MINING, INC. · Over-exertion (Not Elsewhere Classified)
Spasm in lower back, occurring from sliding forks on WA75 to use to picking up boulders.
2006 · 1 incident
November 28, 2006
AZ · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
HANDLING OF MATERIALS
RED MOUNTAIN MINING, INC. · Struck against stationary object
while opening valve, hit another valve with elbow. Action happened repeatedly throughout the day.
2005 · 1 incident
May 18, 2005
AZ · Metal/Non-Metal
warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator
HANDTOOLS (NONPOWERED)
RED MOUNTAIN MINING, INC. · Over-exertion in pulling or pushing objects
Employee was using a 1-1/16" combination wrench on the same size nuts to tighten the clamp rails on a screen shaker. While applying downward pressure to the wrench, employee said he felt something give way in his left shoulder. Since then, employee has had difficulty using his left arm and shoulder.
1994 · 2 incidents
April 11, 1994
AZ · Metal/Non-Metal
greaser, grease man, oiler, lube man, dragline oiler
SLIP OR FALL OF PERSON
RED MOUNTAIN MINING, INC. · Fall from machine
AT PLANT #2 HAD GREASED HEAD PULLY ON BELT, NORTH SIDE OF PLANT, COMING BACK DOWN, SLIPPED OR TRIPPED NEAR BOTTOM, FELL APPROXIMATELY 10 FEET, LANDED LEFT SIDE.
RED MOUNTAIN MINING, INC. · Fall to the walkway or working surface
SLIPPED BACK AND TWISTED BACK AT CRUSHING PLANT #1 EAST SIDE OF FEED HOPPER ON 45 DEGREE BANK. SLIPPED AND TURNED TO REACH FOR SOMETHING QUICKLY AND TWISTED LOWER BACK.
1993 · 1 incident
July 21, 1993
AZ · Metal/Non-Metal
warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator
MACHINERY
RED MOUNTAIN MINING, INC. · Struck by... (Not Elsewhere Classified)
SEE EXHIBIT A