Munn & Perkins Pit & Mill has $10K in proposed MSHA penalties and $231 outstanding across 1 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
21
Years on record
1983–2019
Latest incident
Feb 2019
Compliance record
MSHA citations since 2001
93
citations
14
significant & substantial
$9,907
proposed penalties
$9,676
paid to date
98% of proposed penalties paid to date, a $231 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: 849 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Munn & Perkins Pit & Mill has $10K in proposed MSHA penalties and $231 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.
$10K
proposed penalties
$10K
current assessed
$10K
paid to date
$231
outstanding
90 assessments are final orders; 1 contested dockets.
Of $100 in penalties contested before the Commission, $0 was upheld in final decisions.
As of the most recent assessment on 2026-05-20.
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.
1citations taken to the federal commission · 1% of citations on record
Vacated or withdrawn
1 · 100%
100%
Penalty reduction in decided contests
$100 proposed, $0 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2012-10-19.
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: 2026-03-25
0%
of limit-tested samples over the exposure limit
17
samples
8
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz8
Respirable dust, <.1mg8
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (17)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-03-25
Respirable dust, <.1mg
0
Front-end Loader Operator
2018-05-02
Respirable dust, <.1mg
0
Washer Operator
2016-11-16
Respirable dust, <.1mg
0
Front-end Loader Operator
2016-11-16
Unlisted Particulate, respirable, <1% Qtz
0.15
Crusher Oper/Worker
2013-09-10
Respirable dust, <.1mg
0
Backhoe Operator
2013-09-10
Respirable dust, <.1mg
0
Truck Driver
2009-06-16
Respirable dust, <.1mg
0
Front-end Loader Operator
2009-06-16
Quartz, respirable, >1% Qtz
0.16
0.96
0.17
Laborer, Bullgang
2009-06-16
Quartz, respirable, >1% Qtz
0.12
0.65
0.18
Laborer, Bullgang
2005-08-16
Quartz, respirable, >1% Qtz
0.47
0.55
0.85
Dry Screen Plant Operator
2005-08-16
Respirable dust, <.1mg
0
Front-end Loader Operator
2005-08-16
Quartz, respirable, >1% Qtz
0.28
1.6
0.18
Truck Driver
2005-08-16
Quartz, respirable, >1% Qtz
0.4
1.15
0.35
Washer Operator
2003-05-01
Quartz, respirable, >1% Qtz
0.16
0.99
0.16
Washer Operator
2003-05-01
Quartz, respirable, >1% Qtz
0.13
0.72
0.18
Crusher Oper/Worker
2003-05-01
Quartz, respirable, >1% Qtz
0.2
1.02
0.20
Front-end Loader Operator
2003-05-01
Respirable dust, <.1mg
0
Front-end Loader 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.
Munn & Perkins Pit & Mill recorded 0.00 reportable injury cases per 100 full-time workers in 2008.
Injury rate, 2008
ⓘ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 3.15 and the all-US-mining average was 3.61 cases per 100 workers.
In California, metal and nonmetal mining averaged 3.34 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
2008 *
0.00
0.00
0.000
2007 *
0.00
0.00
0.000
2005 *
4.15
0.00
0.000
2004 *
6.81
6.81
0.000
2003 *
14.08
0.00
0.000
2002 *
0.00
0.00
0.000
2001 *
7.27
7.27
0.000
2000 *
9.22
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
8
2025
8
2024
8
2023
8
2022
10
2021
10
2020
12
2019
15
2018
17
2017
2
2016
2
2015
3
2014
2
2013
8
2012
8
2011
9
2010
9
2009
10
2008
13
2007
17
2006
9
2005
22
2004
19
2003
18
2002
18
2001
19
2000
16
Source: MSHA quarterly employment and production, updated weekly.
Munn & Perkins Pit & Mill sits in San Joaquin 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.
San Joaquin County, California · Population 787,416
0.1%
Mining share of county employment
$88,531
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
4,329
1
0
231.0
2026 Q1
4,231
0
0
0.0
2025 Q4
3,748
0
0
0.0
2025 Q3
4,174
0
0
0.0
2025 Q2
4,134
2
0
483.8
2025 Q1
4,980
1
0
200.8
2024 Q4
5,135
0
0
0.0
2024 Q3
2,361
1
0
423.5
Show 97 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
3,817
0
0
0.0
2024 Q1
3,736
1
0
267.7
2023 Q4
2,913
0
0
0.0
2023 Q3
3,460
0
0
0.0
2023 Q2
4,651
0
0
0.0
2023 Q1
3,680
0
0
0.0
2022 Q4
4,476
0
0
0.0
2022 Q3
4,310
0
0
0.0
2022 Q2
5,431
2
0
368.3
2022 Q1
2,187
2
0
914.5
2021 Q4
4,297
0
0
0.0
2021 Q3
3,629
0
0
0.0
2021 Q2
3,669
0
0
0.0
2021 Q1
3,474
0
0
0.0
2020 Q4
3,329
2
0
600.8
2020 Q3
4,246
1
0
235.5
2020 Q2
4,064
0
0
0.0
2020 Q1
3,475
0
0
0.0
2019 Q4
3,592
0
0
0.0
2019 Q3
3,808
0
0
0.0
2019 Q1
3,477
0
0
0.0
2018 Q4
4,552
4
2
878.7
2018 Q3
4,920
0
0
0.0
2018 Q2
3,067
0
0
0.0
2018 Q1
1,758
0
0
0.0
2017 Q4
802
0
0
0.0
2017 Q3
463
0
0
0.0
2017 Q2
499
1
0
2004.0
2017 Q1
395
0
0
0.0
2016 Q4
488
0
0
0.0
2016 Q3
539
0
0
0.0
2016 Q2
779
0
0
0.0
2016 Q1
1,148
0
0
0.0
2015 Q4
1,286
1
0
777.6
2015 Q3
1,102
0
0
0.0
2015 Q2
742
0
0
0.0
2015 Q1
591
0
0
0.0
2014 Q4
636
0
0
0.0
2014 Q3
363
0
0
0.0
2014 Q2
355
0
0
0.0
2014 Q1
149
0
0
0.0
2013 Q4
1,682
0
0
0.0
2013 Q3
1,655
1
0
604.2
2013 Q2
2,624
0
0
0.0
2013 Q1
1,165
3
0
2575.1
2012 Q4
1,810
0
0
0.0
2012 Q3
1,854
5
0
2696.9
2012 Q2
2,089
0
0
0.0
2012 Q1
2,166
1
0
461.7
2011 Q4
1,732
0
0
0.0
2011 Q3
2,376
0
0
0.0
2011 Q2
2,217
1
0
451.1
2011 Q1
1,685
3
1
1780.4
2010 Q4
2,199
0
0
0.0
2010 Q3
2,571
0
0
0.0
2010 Q2
2,682
1
0
372.9
2010 Q1
1,905
0
0
0.0
2009 Q4
3,060
2
1
653.6
2009 Q3
3,920
0
0
0.0
2009 Q2
2,813
2
0
711.0
2009 Q1
2,188
3
0
1371.1
2008 Q4
3,203
0
0
0.0
2008 Q3
5,592
0
0
0.0
2008 Q2
8,494
0
0
0.0
2008 Q1
4,653
1
0
214.9
2007 Q4
5,306
0
0
0.0
2007 Q3
7,361
2
0
271.7
2007 Q2
8,346
0
0
0.0
2007 Q1
4,386
8
3
1824.0
2006 Q4
3,632
0
0
0.0
2006 Q3
3,703
0
0
0.0
2006 Q2
5,330
1
0
187.6
2006 Q1
3,946
4
0
1013.7
2005 Q4
7,185
0
0
0.0
2005 Q3
14,106
4
1
283.6
2005 Q2
13,839
0
0
0.0
2005 Q1
13,018
1
0
76.8
2004 Q4
6,993
0
0
0.0
2004 Q3
7,914
4
0
505.4
2004 Q2
7,396
0
0
0.0
2004 Q1
7,059
3
0
425.0
2003 Q4
6,985
0
0
0.0
2003 Q3
7,165
5
0
697.8
2003 Q2
6,927
10
2
1443.6
2003 Q1
7,339
0
0
0.0
2002 Q4
6,532
0
0
0.0
2002 Q3
5,991
1
0
166.9
2002 Q2
6,781
0
0
0.0
2002 Q1
6,741
2
1
296.7
2001 Q4
6,843
0
0
0.0
2001 Q3
7,530
0
0
0.0
2001 Q2
6,474
0
0
0.0
2001 Q1
6,657
3
3
450.7
2000 Q4
5,194
0
0
0.0
2000 Q3
5,712
0
0
0.0
2000 Q2
5,089
0
0
0.0
2000 Q1
5,699
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
21 on file
2019 · 1 incident
February 12, 2019CA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
George Reed Inc · Over-exertion in pulling or pushing objects
Employee was splicing conveyor belt with three other ees at Bellino Tunnel Belt. While positioning belt, ee was standing, slightly bent at waist pulling slack from belt and felt sharp pain in lower back, diagnosed as a strain.
2011 · 2 incidents
December 8, 2011CA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDLING OF MATERIALS
Employee was replacing a belt on the Power Screen and bumped his knee, causing a contusion that subsequently became infected. Employee declined medical treatment until 12/13/11. Claim was accepted on 12/13/11 as reportable.
April 4, 2011CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
Employee was removing a dowpin from a nut guard to the crusher, when the wrench slipped, causing the top of his right index finger to cut on the sharp edge of the nut guard
2005 · 1 incident
January 19, 2005CA · Metal/Non-Metalprep plant foreman, supervisor, mill plant supervisor, kiln supervisorHANDLING OF MATERIALS
George Reed Inc · Caught in, under or between a moving and a stationary object
Employee was replacing a 15 HP electric motor on the crusher feeder. As he tried to position the motor onto the mount, the motor shifted and caught his finger against the frame of the crusher feeder. Employee experienced a laceration on the small finger of his right hand.
2004 · 1 incident
December 27, 2004CA · Metal/Non-Metalclerk, timekeeper, office worker, director of salesSLIP OR FALL OF PERSON
DESCENDING FROM A STEP STOOL. EE MISSED THE SECOND STEP, FELL BACKWARD, AND HIT HER HEAD ON THE EDGE OF THE DESK. EE'S IMPACT ON THE EDGE OF THE DESK CAUSED A 3/4" LACERATION TO THE BACK OF THE HEAD.
EMPLOYEE GRASPED A HANDRAIL USED FOR ACCESS TO A PLATFORM UTILIZED TO CHANGE THE BLOW BARS ON A RECYCLE PLANT. EMPLOYEE FELT A SHARP PAIN IN HIS RIGHT SHOULDER. THE PAIN DID NOT SUBSIDE, SO TH E EMPLOYEE WAS DRIVEN TO CALIFORNIA OCCUPATION PHYSICIANS IN MODESTO, CA. FURTHER EVALUATION REVEALED AN ACUTE SPRAIN ON HIS RIGHT SHOULDER.
September 8, 2003CA · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorOTHER
EE INFORMED HIS FOREMAN THAT HE DIDN'T FEEL WELL & HAD FELT A PAIN IN HIS RIGHT ARM. FOREMAN TOLD EE HE WAS GOING TO DRIVE HIM TO CALIF. OCCUPATIONAL SERVICES IN MODESTO TO HAVE THE SITUATION CHECKED OUT. EE SAID HE PREFERRED TO GO HOME & CONSULT HIS PERSONAL DR. EE'S DR MET HIM @ SONORA HOSPITAL, RAN SOME TESTS WHICH INDICATED EE HAD MAJOR HEART PROBLEM & HAD EXPERIENCED MILD HEAR
January 31, 2003CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
WORKER WAS LOOSENING A NUT ON A CONE CRUSHER UNIT. A WRENCH WAS ATTACHED TO THE NUT, AND THE WORKER WAS HITTING THE WRENCH WITH A 4" SHAFT. WORKER MISSED HIS TARGET AND SLAMMED HIS FINGER AGAI NST THE WRENCH.
2000 · 1 incident
March 15, 2000CA · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorSLIP OR FALL OF PERSON
OPERATOR WAS MOVING A HYDRAULIC JACK AFTER ADJUSTING A CONE CRUSHER. HE SLIPPED ON AN OILY SURFACE ON THE CRUSHER PLATFORM, LANDING ON HIS BOTTOM LEFT SIDE.
EE WAS WALKING OVER SEVERASL WINDROWS OF COBBLES TO GET FROM THE PLASTER SAND PLANT TO THE PRIMARY WASH PLANT. ONE OF THE CBBLES GAVE WAY CAUSING THE EE TO SLIP AND TWIST HIS ANKLE.
1992 · 1 incident
August 4, 1992CA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
54736YEE WAS CUTTING A PLASTIC TIE AT THE WASH PLANT DISCHARGE SCREEN WITH A POCKET KNIFE. WHEN THE KNIFE CUT THRU THE TIE, IT STRUCK HIS LEFT HAND AT THE THUMB JUST BELOW THE FIRST JOINT.
1990 · 1 incident
February 20, 1990CA · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorHANDTOOLS (NONPOWERED)
George Reed Inc · Over-exertion in wielding or throwing objects
EMPLOYEE WAS SWINGING A 20 LB. SLEDGEHAMMER ATTEMPTING TO LOOSEN THE MANTLE ON A CONE CRUSHER. WHEN EMPLOYEE SWUNG THE SLEDGEHAMMER, HE FELT SOMETHING PULL IN HIS RIB AREA AND EXPERIENCED DIFF ICULTY IN BREATHING.
EMPLOYEE WAS RE1AIRING A JAW CHEEK PLATE ON WASH PLANT USING A SLEDGE HAMMER EMPLOYEE WAS STANDING UNDER AN OPEN METAL DOOR WHICH IS HINDGED FROM THE T OP EMPLOYEE WAS BEATING AGAINST THE CHEE K PLATE WITH A 8LEDGE HAMMER ATTEMPTING TO LOOSEN IT A BOLT BROKE & JOLTED METAL DOOR CAUSING IT TO FALL ON HIS RT SHOULDER BLADE
September 18, 1986CA · Metal/Non-Metalgreaser, grease man, oiler, lube man, dragline oilerSLIP OR FALL OF PERSON
EMPLOYEE WAS RE1AIRING FLASHING AND TAIL PULLEY ON COBBLE BELT TO WASH PLANT AND PELL APPROX. 12 INCHES TO THE GROUND.
August 26, 1986CA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorPOWERED HAULAGE
George Reed Inc · Caught in, under or between a moving and a stationary object
EMPLOYEE ATTEMP7ING TO MOVE BELT BY LOOSENING A BOLT ON BACK OF HOPPER WITH A 9/16INX1/2IN DOUBLE BOX WRENCH 5IN LONG WRENCH CAUGHT ONTO MOVING BELT PULLING WRENCH AGAINST METAL HOPPER EMPLOYE ES FINGER CAUGH7 IN BETWEEN CUTTING HIS FINGER
EMPLOYEE ATTEMP7ING TO LOOSEN A PIECE OF RUBBER ON CONVEYOR BELT WITH A STEEL BAR APPROX.3FT LONG STEEL BAR SLIPPED & EMPLOYEE JAMMED HIS FINGER ON A SIDE RAILING
1984 · 1 incident
May 24, 1984CA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorMACHINERY