The Standard Mine has $62K in proposed MSHA penalties and $45K outstanding across 4 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
2
Years on record
2012–2017
Latest incident
Jun 2017
Compliance record
MSHA citations since 2006
94
citations
37
significant & substantial
$62,436
proposed penalties
$17,673
paid to date
28% of proposed penalties paid to date, a $44,763 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.
Rate withheld: 836 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
The Standard Mine has $62K in proposed MSHA penalties and $45K 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.
$62K
proposed penalties
$62K
current assessed
$18K
paid to date
$45K
outstanding
92 assessments are final orders; 4 contested dockets.
Of $17K in penalties contested before the Commission, $17K was upheld in final decisions.
As of the most recent assessment on 2026-02-19.
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.
5citations taken to the federal commission · 5% of citations on record
Settled
3 · 60%
Stood as issued
2 · 40%
67%
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 Vacated and withdrawn citations, and settlements that removed the designation, count against.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 3 decided S&S contests · industry: 79%
0%
Penalty reduction in decided contests
$17K proposed, $17K 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 2019-07-30.
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: 2020-06-03, 6 years ago
0%
of limit-tested samples over the exposure limit
6
samples
2
limit-tested
Most sampled contaminants
Respirable dust, <.1mg4
Nuisance dust, respirable, <1% Qtz1
Quartz, respirable, >1% Qtz1
Show the individual readings (6)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2020-06-03
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2020-06-03
Respirable dust, <.1mg
0
Truck Driver
2017-03-29
Respirable dust, <.1mg
0
Front-end Loader Operator
2009-02-10
Quartz, respirable, >1% Qtz
0.44
2.73
0.16
Cutting Mach Operator
2009-02-10
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2006-03-29
Nuisance dust, respirable, <1% Qtz
0.29
10
0.03
Mechanic
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.
The Standard Mine recorded 0.00 reportable injury cases per 100 full-time workers in 2020.
Injury rate, 2020
ⓘ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 1.77 and the all-US-mining average was 2.08 cases per 100 workers.
In California, metal and nonmetal mining averaged 1.80 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
2020 *
0.00
0.00
0.000
2019 *
0.00
0.00
0.000
2018 *
0.00
0.00
0.000
2017 *
7.01
7.01
0.000
2012 *
7.64
7.64
0.000
2010 *
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
4
2025
3
2024
3
2023
3
2022
7
2021
11
2020
15
2019
22
2018
22
2017
14
2016
12
2013
6
2012
13
2011
10
2010
12
2009
10
2008
6
2007
7
2006
5
Source: MSHA quarterly employment and production, updated weekly.
The Standard Mine sits in Riverside County, California, where the Census mining category is 0.1% 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.
Riverside County, California · Population 2,449,909
0.1%
Mining share of county employment
$89,672
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
595
0
0
0.0
2026 Q1
275
3
2
10909.1
2025 Q4
520
0
0
0.0
2025 Q3
500
0
0
0.0
2025 Q2
400
0
0
0.0
2025 Q1
550
0
0
0.0
2024 Q4
580
1
0
1724.1
2024 Q3
875
0
0
0.0
Show 58 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
908
0
0
0.0
2024 Q1
594
2
0
3367.0
2023 Q4
1,106
0
0
0.0
2023 Q3
1,015
3
0
2955.7
2023 Q2
1,349
0
0
0.0
2022 Q3
2,933
0
0
0.0
2022 Q2
2,442
1
0
409.5
2022 Q1
2,302
2
0
868.8
2021 Q4
2,857
0
0
0.0
2021 Q3
3,970
0
0
0.0
2021 Q2
4,451
0
0
0.0
2021 Q1
3,789
1
0
263.9
2020 Q4
4,851
0
0
0.0
2020 Q3
5,029
0
0
0.0
2020 Q2
7,236
1
0
138.2
2020 Q1
8,332
0
0
0.0
2019 Q4
9,848
1
0
101.5
2019 Q3
10,030
0
0
0.0
2019 Q2
10,292
4
1
388.7
2019 Q1
11,213
2
0
178.4
2018 Q4
11,674
0
0
0.0
2018 Q3
9,389
0
0
0.0
2018 Q2
10,917
1
0
91.6
2018 Q1
9,950
1
0
100.5
2017 Q4
10,508
2
1
190.3
2017 Q3
6,892
0
0
0.0
2017 Q2
5,261
4
3
760.3
2017 Q1
5,865
1
0
170.5
2016 Q4
5,659
2
0
353.4
2013 Q2
0
0
0
2013 Q1
5,377
3
1
557.9
2012 Q4
8,695
0
0
0.0
2012 Q3
7,233
0
0
0.0
2012 Q2
6,070
0
0
0.0
2012 Q1
4,169
0
0
0.0
2011 Q4
4,121
2
0
485.3
2011 Q2
4,975
0
0
0.0
2011 Q1
5,238
4
2
763.7
2010 Q4
4,979
0
0
0.0
2010 Q3
5,014
1
0
199.4
2010 Q2
4,163
7
4
1681.5
2010 Q1
5,938
0
0
0.0
2009 Q4
5,858
6
4
1024.2
2009 Q3
4,126
0
0
0.0
2009 Q2
4,902
1
0
204.0
2009 Q1
4,376
1
0
228.5
2008 Q4
3,021
7
2
2317.1
2008 Q3
3,060
1
1
326.8
2008 Q2
2,831
9
4
3179.1
2008 Q1
2,440
0
0
0.0
2007 Q4
3,269
9
6
2753.1
2007 Q3
4,216
0
0
0.0
2007 Q2
3,080
1
1
324.7
2007 Q1
1,858
0
0
0.0
2006 Q4
2,520
3
2
1190.5
2006 Q3
2,760
1
0
362.3
2006 Q2
3,240
1
0
308.6
2006 Q1
3,240
1
1
308.6
No fatalities recorded at this mine.
Reportable incidents
2 on file
2017 · 1 incident
June 7, 2017CA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerMACHINERY
While preparing the pad to load hauling trucks; the side wall gave out causing the excavator to slide down approximately 12 to 15 feet; once the excavator got to the bottom, it tipped on it's side.
2012 · 1 incident
October 19, 2012CA · Metal/Non-Metalwelder (shop)MACHINERY