Mining Incidents

Waverly: 133 MSHA citations Metal/Non-Metal

San Joaquin County Aggregates · Surface
Controlled by Earl J Rogers
linden, San Joaquin County, CA  ·  Active
MSHA Mine ID: 0405846

Waverly has $41K in proposed MSHA penalties and $0 outstanding across 4 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
3
Years on record
2018–2022
Latest incident
Apr 2022
Compliance record
MSHA citations since 2013
133
citations
28
significant & substantial
$40,859
proposed penalties
$39,442
paid to date
97% of proposed penalties paid to date, a $1,417 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2013
40
inspections on record
535
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: 535 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Waverly has $41K in proposed MSHA penalties and $0 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.
$41K
proposed penalties
$39K
current assessed
$39K
paid to date
$0
outstanding
133 assessments are final orders; 4 contested dockets.
Of $9K in penalties contested before the Commission, $8K was upheld in final decisions.
As of the most recent assessment on 2026-05-18.
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.
21.1%
significant & substantial
0.8%
high negligence or reckless
21.1%
reasonably likely or greater
50.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 23.3% low, 75.9% moderate, 0.8% 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.
16 citations taken to the federal commission · 12% of citations on record
  • Settled 13 · 81%
  • Stood as issued 3 · 19%
100%
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 10 decided S&S contests · industry: 79%
15%
Penalty reduction in decided contests
$9K proposed, $8K 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 2022-07-19.
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.
Docket Decision Judge Year Proposed / upheld
WEST 2022-0283 Settlement Simonton 2022 $6K → $4K
WEST 2022-0282 Dismissal Simonton 2022 $3K → $3K
WEST 2017-0544 Settlement Miller 2017 $706 → $706
WEST 2016-0141 Settlement Rae 2016 $100 → $100
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: 2026-05-19
4
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg4
Show the individual readings (4)
Date Contaminant Concentration Limit Conc / limit Occupation
2026-05-19 Respirable dust, <.1mg 0 Truck Driver
2026-05-19 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-02-18 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-02-18 Respirable dust, <.1mg 0 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.
Ownership history
  1. CMAT Mobile Crushing 2012 to 2013
  2. CMAT Mobile Crushing, Inc. 2013 to 2025
  3. San Joaquin County Aggregates 2025 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 6
2025 5
2024 5
2023 5
2022 6
2021 4
2020 3
2019 5
2018 5
2017 2
2016 1
2015 1
2014 1
2012 5
Source: MSHA quarterly employment and production, updated weekly.

Waverly 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 2,451 3 0 1224.0
2026 Q1 2,408 0 0 0.0
2025 Q4 2,315 4 0 1727.9
2025 Q3 2,461 0 0 0.0
2025 Q2 2,509 1 0 398.6
2025 Q1 1,280 2 0 1562.5
2024 Q4 2,216 0 0 0.0
2024 Q3 3,013 9 0 2987.1
Show 43 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 2,248 0 0 0.0
2024 Q1 1,655 0 0 0.0
2023 Q4 2,196 0 0 0.0
2023 Q3 1,961 3 0 1529.8
2023 Q2 2,322 0 0 0.0
2023 Q1 1,368 0 0 0.0
2022 Q4 2,058 0 0 0.0
2022 Q3 3,358 0 0 0.0
2022 Q2 2,096 14 0 6679.4
2022 Q1 2,207 28 11 12686.9
2021 Q4 1,098 0 0 0.0
2021 Q3 1,797 0 0 0.0
2021 Q2 1,606 4 0 2490.7
2021 Q1 1,310 7 1 5343.5
2020 Q4 1,958 0 0 0.0
2020 Q3 1,900 2 0 1052.6
2020 Q2 939 0 0 0.0
2020 Q1 402 2 0 4975.1
2019 Q4 1,417 0 0 0.0
2019 Q3 2,523 0 0 0.0
2019 Q2 2,345 3 1 1279.3
2019 Q1 665 0 0 0.0
2018 Q4 2,459 4 0 1626.7
2018 Q3 1,537 1 0 650.6
2018 Q2 1,690 0 0 0.0
2018 Q1 2,240 0 0 0.0
2017 Q4 1,273 9 3 7069.9
2017 Q3 320 0 0 0.0
2017 Q2 1,040 6 2 5769.2
2017 Q1 0 1 0
2016 Q4 0 0 0
2016 Q3 0 1 0
2016 Q2 0 0 0
2016 Q1 139 0 0 0.0
2015 Q4 0 0 0
2015 Q3 149 1 0 6711.4
2015 Q2 246 15 6 60975.6
2015 Q1 0 0 0
2014 Q4 0 0 0
2014 Q3 0 0 0
2014 Q2 1,420 7 3 4929.6
2014 Q1 0 0 0
2012 Q3 1,224 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

3 on file

2022 · 1 incident

April 22, 2022 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
CMAT Mobile Crushing, Inc. · Struck by... (Not Elsewhere Classified)

Co-worker & IE used catwalk equipment to change a screen. While using pry bar it slipped off the equipment, accidentally. The end of the pry bar contacted lip of IE and caused a small laceration. IE went to an urgent care in Stockton, CA and received 5-stitches. IE missed no work days, and has not impacted ability to work.

2020 · 1 incident

May 6, 2020 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
CMAT Mobile Crushing, Inc. · Struck by flying object

Miner was removing wedged cobbles and as soon as EE was able to remove the wedged cobbles one slung out and hit EE's shin.

2018 · 1 incident

June 29, 2018 CA · Metal/Non-Metal FIRE
CMAT Mobile Crushing, Inc. · Accident type, without injuries

Possible contact with overhead electrical lines by excavator traveling roadway. Hot dry windy conditions. No injuries or damage to mine site.