Madera Quarry, Inc. has $6K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
2
Years on record
2011–2016
Latest incident
Feb 2016
Compliance record
MSHA citations since 2011
38
citations
6
significant & substantial
$6,489
proposed penalties
$6,489
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2011
15
inspections on record
310
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: 310 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Madera Quarry, Inc. has $6K 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.
$6K
proposed penalties
$6K
current assessed
$6K
paid to date
$0
outstanding
38 assessments are final orders; 1 contested dockets.
Of $600 in penalties contested before the Commission, $600 was upheld in final decisions.
As of the most recent assessment on 2026-02-03.
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.
6citations taken to the federal commission · 16% of citations on record
Settled
6 · 100%
0%
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 Vacated and withdrawn citations, and settlements that removed the designation, count against.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%
0%
Penalty reduction in decided contests
$600 proposed, $600 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 2011-12-05.
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: 2026-02-03
0%
of limit-tested samples over the exposure limit
6
samples
5
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz5
Respirable dust, <.1mg1
Show the individual readings (6)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-02-03
Quartz, respirable, >1% Qtz
0.27
0.63
0.43
Bobcat Operator
2026-02-03
Quartz, respirable, >1% Qtz
0.36
0.7
0.51
Bobcat Operator
2017-04-11
Quartz, respirable, >1% Qtz
0.29
0.5
0.58
Front-end Loader Operator
2017-04-11
Quartz, respirable, >1% Qtz
0.27
0.57
0.47
Ground Control/Timberman
2011-10-12
Quartz, respirable, >1% Qtz
0.41
0.8
0.51
Mechanic
2011-10-12
Respirable dust, <.1mg
0
Shovel Operator
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.
Madera Quarry, Inc. 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 1.43 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 *
0.00
0.00
0.000
2017 *
0.00
0.00
0.000
2016 *
5.41
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
19
2025
10
2024
14
2023
13
2020
1
2019
1
2018
3
2017
16
2016
16
2015
13
2014
0
2013
0
2012
2
2011
9
Source: MSHA quarterly employment and production, updated weekly.
Madera Quarry, Inc. sits in Madera County, California, where the Census mining category is 0.0% 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.
Madera County, California · Population 158,790
0.0%
Mining share of county employment
$75,496
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
Plant laborer was working to clear rock that had plugged the top deck discharge chute on the #1 screen using a shovel. While dislodging the rocks, they came loose with one bouncing up and hitting EE's hand where EE was holding the shovel which resulted in a laceration to the right hand.
2011 · 1 incident
December 30, 2011CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSLIP OR FALL OF PERSON
Plant mechanic was working to clear a rock lodged in the tail pulley of a conveyor. Equipment was off and locked out and tagged out. Using a breaker bar to pry loose the rock, the miner lost his grip on the bar and fell backward but his left foot remained planted as his body twisted. This resulted in the dislocation of his left ankle and broken left foot.