Jackson Valley Quarry has $62K 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
12
Years on record
1991–2022
Latest incident
Jul 2022
Compliance record
MSHA citations since 2001
131
citations
29
significant & substantial
$61,912
proposed penalties
$61,912
paid to date
100% of proposed penalties paid to date, a $0 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.
131 citations across 1,034 inspection hours.
Source: MSHA inspections data, updated weekly.
Jackson Valley Quarry has $62K 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.
$62K
proposed penalties
$62K
current assessed
$62K
paid to date
$0
outstanding
131 assessments are final orders; 1 contested dockets.
Of $425 in penalties contested before the Commission, $425 was upheld in final decisions.
As of the most recent assessment on 2025-10-20.
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
Settled
1 · 100%
0%
Penalty reduction in decided contests
$425 proposed, $425 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2009-01-29.
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: 2024-11-14
0%
of limit-tested samples over the exposure limit
13
samples
11
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz11
Respirable dust, <.1mg2
Show the individual readings (13)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2024-11-14
Quartz, respirable, >1% Qtz
0.24
0.78
0.31
Laborer, Bullgang
2021-11-03
Respirable dust, <.1mg
0
Truck Driver
2015-04-22
Quartz, respirable, >1% Qtz
0.29
1.51
0.19
Crusher Oper/Worker
2015-04-22
Quartz, respirable, >1% Qtz
0.25
1.59
0.16
Crusher Oper/Worker
2015-04-22
Quartz, respirable, >1% Qtz
0.24
1.67
0.14
Drill Operator, Rotary Air
2009-12-16
Quartz, respirable, >1% Qtz
0.26
0.72
0.36
Front-end Loader Operator
2009-12-16
Quartz, respirable, >1% Qtz
0.19
0.67
0.28
Crusher Oper/Worker
2009-12-16
Quartz, respirable, >1% Qtz
0.23
0.75
0.31
Truck Driver
2009-12-16
Respirable dust, <.1mg
0
Crusher Oper/Worker
2004-04-07
Quartz, respirable, >1% Qtz
0.35
0.76
0.46
Front-end Loader Operator
2004-04-07
Quartz, respirable, >1% Qtz
1.05
1.07
0.98
Crusher Oper/Worker
2004-04-07
Quartz, respirable, >1% Qtz
0.84
1.57
0.54
Crusher Oper/Worker
2004-04-07
Quartz, respirable, >1% Qtz
0.29
0.8
0.36
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.
Jackson Valley Quarry 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 1.42 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
2023 *
0.00
0.00
0.000
2022 *
4.25
4.25
0.000
2021 *
0.00
0.00
0.000
2020 *
0.00
0.00
0.000
2019 *
0.00
0.00
0.000
2018 *
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
21
2025
21
2024
20
2023
23
2022
23
2021
20
2020
27
2019
33
2018
28
2017
15
2016
15
2015
13
2014
9
2013
6
2012
10
2011
11
2010
11
2009
12
2008
15
2007
15
2006
15
2005
12
2004
11
2003
18
2002
18
2001
17
2000
17
Source: MSHA quarterly employment and production, updated weekly.
Jackson Valley Quarry sits in Amador County, California, 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.
Amador County, California · Population 41,029
0.2%
Mining share of county employment
$81,526
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
11,504
0
0
0.0
2026 Q1
10,252
0
0
0.0
2025 Q4
10,229
3
0
293.3
2025 Q3
10,559
0
0
0.0
2025 Q2
12,132
6
3
494.6
2025 Q1
10,226
0
0
0.0
2024 Q4
12,444
2
1
160.7
2024 Q3
8,821
0
0
0.0
Show 98 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
10,706
0
0
0.0
2024 Q1
11,084
0
0
0.0
2023 Q4
10,908
0
0
0.0
2023 Q3
13,048
0
0
0.0
2023 Q2
12,351
0
0
0.0
2023 Q1
10,901
0
0
0.0
2022 Q4
12,238
1
0
81.7
2022 Q3
12,052
0
0
0.0
2022 Q2
13,905
1
0
71.9
2022 Q1
8,810
0
0
0.0
2021 Q4
10,550
0
0
0.0
2021 Q3
10,237
1
0
97.7
2021 Q2
12,678
0
0
0.0
2021 Q1
7,692
1
0
130.0
2020 Q4
9,787
0
0
0.0
2020 Q3
10,224
0
0
0.0
2020 Q2
11,677
1
0
85.6
2020 Q1
10,703
2
0
186.9
2019 Q4
11,169
0
0
0.0
2019 Q3
11,604
0
0
0.0
2019 Q2
11,161
0
0
0.0
2019 Q1
9,570
0
0
0.0
2018 Q4
10,863
2
0
184.1
2018 Q3
13,950
0
0
0.0
2018 Q2
11,144
1
1
89.7
2018 Q1
7,157
0
0
0.0
2017 Q4
7,644
0
0
0.0
2017 Q3
7,876
0
0
0.0
2017 Q2
7,710
2
0
259.4
2017 Q1
6,476
3
1
463.2
2016 Q4
6,439
0
0
0.0
2016 Q3
8,900
1
0
112.4
2016 Q2
8,521
1
0
117.4
2016 Q1
7,125
0
0
0.0
2015 Q4
7,854
4
0
509.3
2015 Q3
9,870
0
0
0.0
2015 Q2
9,140
1
0
109.4
2015 Q1
5,888
0
0
0.0
2014 Q4
5,097
0
0
0.0
2014 Q3
6,475
0
0
0.0
2014 Q2
5,664
2
0
353.1
2014 Q1
2,660
0
0
0.0
2013 Q4
2,716
1
0
368.2
2013 Q3
1,876
0
0
0.0
2013 Q2
1,788
2
0
1118.6
2013 Q1
1,377
1
0
726.2
2012 Q4
3,473
4
1
1151.7
2012 Q3
3,813
0
0
0.0
2012 Q2
3,260
2
0
613.5
2012 Q1
2,327
2
0
859.5
2011 Q4
3,689
0
0
0.0
2011 Q3
3,321
2
0
602.2
2011 Q2
3,782
0
0
0.0
2011 Q1
3,193
4
1
1252.7
2010 Q4
3,106
0
0
0.0
2010 Q3
4,169
0
0
0.0
2010 Q2
3,576
2
1
559.3
2010 Q1
2,333
0
0
0.0
2009 Q4
6,673
1
0
149.9
2009 Q3
4,645
0
0
0.0
2009 Q2
3,742
5
0
1336.2
2009 Q1
2,841
0
0
0.0
2008 Q4
3,639
4
1
1099.2
2008 Q3
7,349
0
0
0.0
2008 Q2
6,666
0
0
0.0
2008 Q1
8,554
7
3
818.3
2007 Q4
7,282
2
0
274.6
2007 Q3
6,960
0
0
0.0
2007 Q2
9,438
1
1
106.0
2007 Q1
6,425
0
0
0.0
2006 Q4
7,669
3
1
391.2
2006 Q3
8,020
2
1
249.4
2006 Q2
6,200
0
0
0.0
2006 Q1
4,824
8
3
1658.4
2005 Q4
4,184
0
0
0.0
2005 Q3
5,852
2
1
341.8
2005 Q2
5,537
0
0
0.0
2005 Q1
4,998
5
1
1000.4
2004 Q4
4,632
0
0
0.0
2004 Q3
5,704
0
0
0.0
2004 Q2
5,229
5
0
956.2
2004 Q1
4,680
0
0
0.0
2003 Q4
4,210
4
1
950.1
2003 Q3
4,059
0
0
0.0
2003 Q2
4,409
0
0
0.0
2003 Q1
5,213
0
0
0.0
2002 Q4
4,515
7
3
1550.4
2002 Q3
4,160
0
0
0.0
2002 Q2
4,640
0
0
0.0
2002 Q1
4,171
4
1
959.0
2001 Q4
3,705
0
0
0.0
2001 Q3
3,535
0
0
0.0
2001 Q2
2,884
0
0
0.0
2001 Q1
2,401
2
1
833.0
2000 Q4
2,872
0
0
0.0
2000 Q3
3,864
0
0
0.0
2000 Q2
3,958
0
0
0.0
2000 Q1
1,306
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
12 on file
2022 · 1 incident
July 8, 2022CA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDTOOLS (NONPOWERED)
Employee was clearing out a blockage on the fines chute underneath the jaw of the primary plant. The employee was using a metal bar to loosen the stuck material. When the last rock came free instead of falling down the chute it came out of the access hatch hitting the miner in the face and hand.
During shift miner unknowingly sustained a minor superficial abrasion on EE's right knee. Two hours after shift, EE noticed inflammation, and rapid swelling. At ER EE was diagnosed with prepatellar bursitis, given antibiotics, and released. After 48 hours swelling continued. EE was admitted to hospital for drainage of knee, IV antibiotics, and observation.
Employee was constructing new conveyor, frame section had no belt, unpowered and no stored energy. While moving frame into place employees hand passed through area between diagonal and horizontal troughing rollers. Space was large enough for employees right hand pinky finger to pass through, but small enough to cause laceration and damage to finger.
2011 · 1 incident
January 31, 2011CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSTRIKING OR BUMPING
Employee suffered Tenosynovitis to the left wrist as a result of striking his wrist against non-sharp angle iron handrail, while walking down stairs at the secondary plant. Employee choose not to seek medical treatment until 2/3/11.
2005 · 2 incidents
December 2, 2005CA · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorHANDLING OF MATERIALS
Changing plate on jaw. Chain released that was holding plate; plate fell on employee - approx. weight 900 lbs - causing neck, wrist, shoulder contusions.
December 2, 2005CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Changing plate on jaw; chain holding plate released plate & it fell on employees'. Approx. weight 900 lbs., causing severe lacerations to his right leg.
2003 · 1 incident
March 19, 2003CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSLIP OR FALL OF PERSON
EE ATTEMPTED TO CLEAR A BRIDGE OF MATERIAL IN THE PRIMARY JAW CRUSHER WHILE RUNNING WITHOUT AUTHORIZATION WITH A PRY BAR. THE BAR GOT CAUGHT BETWEEN A PIECE OF METAL & THE MOVING SIDE OF THE J AW WHICH CAUSED THE PRY BAR TO STRIKE EE
1992 · 2 incidents
September 10, 1992CA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
WHILE LIFTING RIP RAP TO BE SIZED AND WEIGHED HE FELT A TWING TO HIS RIGHT ELBOW. HE THOUGHT THAT HIS ARM WAS OK AND DID NOT GO TO THE DOCTOR UNTIL THE 16TH OF SEPT.