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DILLON PLANT: 51 MSHA citations Metal/Non-Metal

Controlled by James Richert
Indio, Riverside County, CA  ·  Active
MSHA Mine ID: 0405447

DILLON PLANT has $7K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
4
Years on record
2001–2004
Latest incident
Jun 2004
Compliance record
MSHA citations since 2000
51
citations
11
significant & substantial
$6,808
proposed penalties
$6,808
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Coronet Concrete Products's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
45
inspections on record
573
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: 573 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
ⓘ A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
1
Section 107(a) orders
Most recent order: 2022-06-30.
On record since 2022.
Source: MSHA imminent-danger order records, updated weekly.

DILLON PLANT has $7K in proposed MSHA penalties and $0 outstanding across 0 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.
$7K
proposed penalties
$7K
current assessed
$7K
paid to date
$0
outstanding
50 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-04-09.
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.
22.0%
significant & substantial
6.0%
high negligence or reckless
22.0%
reasonably likely or greater
52.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 14.0% low, 80.0% moderate, 6.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, 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: 2024-10-08
0%
of limit-tested samples over the exposure limit
10
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg9
  • Quartz, respirable, >1% Qtz1
Show the individual readings (10)
Date Contaminant Concentration Limit Conc / limit Occupation
2024-10-08 Respirable dust, <.1mg 0 Front-end Loader Operator
2020-09-23 Respirable dust, <.1mg 0 Crusher Oper/Worker
2016-10-20 Respirable dust, <.1mg 0 Front-end Loader Operator
2009-04-08 Respirable dust, <.1mg 0 Front-end Loader Operator
2005-09-07 Respirable dust, <.1mg 0 Front-end Loader Operator
2005-09-07 Respirable dust, <.1mg 0 Front-end Loader Operator
2002-10-30 Respirable dust, <.1mg 0 Front-end Loader Operator
2002-10-30 Quartz, respirable, >1% Qtz 0.13 0.99 0.13 Truck Driver
2000-08-03 Respirable dust, <.1mg 0 Front-end Loader Operator
2000-08-03 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.
Ownership history
  1. A-1 Aggregates Inc 2000 to 2008
  2. CalPortland 2008 to 2019
  3. Coronet Concrete Products 2019 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 3
2025 3
2024 3
2023 4
2022 3
2021 3
2020 5
2019 3
2018 2
2017 2
2016 2
2015 2
2014 2
2013 2
2012 5
2011 3
2010 2
2009 2
2008 2
2007 3
2006 3
2005 3
2004 3
2003 3
2002 3
2001 2
2000 3
Source: MSHA quarterly employment and production, updated weekly.

DILLON PLANT 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 1,960 2 1 1020.4
2026 Q1 1,615 0 0 0.0
2025 Q4 1,980 2 1 1010.1
2025 Q3 2,032 0 0 0.0
2025 Q2 2,060 0 0 0.0
2025 Q1 1,794 0 0 0.0
2024 Q4 1,654 0 0 0.0
2024 Q3 1,143 0 0 0.0
Show 95 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 1,432 0 0 0.0
2024 Q1 1,523 1 0 656.6
2023 Q4 1,357 0 0 0.0
2023 Q3 1,400 1 0 714.3
2023 Q2 1,861 0 0 0.0
2023 Q1 1,348 0 0 0.0
2022 Q4 1,289 1 0 775.8
2022 Q3 1,755 0 0 0.0
2022 Q2 1,760 4 3 2272.7
2022 Q1 977 0 0 0.0
2021 Q4 748 0 0 0.0
2021 Q3 536 0 0 0.0
2021 Q2 941 0 0 0.0
2021 Q1 1,146 0 0 0.0
2020 Q4 1,387 0 0 0.0
2020 Q3 988 1 0 1012.1
2020 Q2 1,602 0 0 0.0
2020 Q1 1,175 0 0 0.0
2019 Q4 1,036 0 0 0.0
2019 Q2 638 0 0 0.0
2019 Q1 104 0 0 0.0
2018 Q4 874 1 0 1144.2
2018 Q3 468 0 0 0.0
2018 Q2 612 0 0 0.0
2018 Q1 380 0 0 0.0
2017 Q4 468 0 0 0.0
2017 Q3 436 0 0 0.0
2017 Q2 584 0 0 0.0
2017 Q1 869 0 0 0.0
2016 Q4 365 0 0 0.0
2016 Q3 680 0 0 0.0
2016 Q2 413 0 0 0.0
2016 Q1 637 0 0 0.0
2015 Q4 202 0 0 0.0
2015 Q3 385 0 0 0.0
2015 Q2 395 0 0 0.0
2015 Q1 289 2 0 6920.4
2014 Q4 424 0 0 0.0
2014 Q3 312 0 0 0.0
2014 Q2 366 0 0 0.0
2014 Q1 235 0 0 0.0
2013 Q4 402 0 0 0.0
2013 Q3 473 0 0 0.0
2013 Q2 517 0 0 0.0
2013 Q1 576 0 0 0.0
2012 Q4 181 1 0 5524.9
2012 Q3 185 0 0 0.0
2012 Q2 322 0 0 0.0
2012 Q1 388 0 0 0.0
2011 Q4 268 0 0 0.0
2011 Q3 478 0 0 0.0
2011 Q2 454 0 0 0.0
2011 Q1 324 0 0 0.0
2010 Q4 222 0 0 0.0
2010 Q3 184 0 0 0.0
2010 Q2 160 0 0 0.0
2010 Q1 96 0 0 0.0
2009 Q4 480 3 1 6250.0
2009 Q3 985 0 0 0.0
2009 Q2 1,016 0 0 0.0
2009 Q1 959 0 0 0.0
2008 Q4 994 1 0 1006.0
2008 Q3 714 0 0 0.0
2008 Q2 844 3 0 3554.5
2008 Q1 1,148 0 0 0.0
2007 Q4 1,678 4 1 2383.8
2007 Q3 1,588 3 0 1889.2
2007 Q2 1,685 0 0 0.0
2007 Q1 1,629 0 0 0.0
2006 Q4 1,699 2 1 1177.2
2006 Q3 1,608 0 0 0.0
2006 Q2 1,651 2 0 1211.4
2006 Q1 1,784 0 0 0.0
2005 Q4 1,715 3 0 1749.3
2005 Q3 1,752 1 0 570.8
2005 Q2 1,327 0 0 0.0
2005 Q1 1,471 4 1 2719.2
2004 Q4 1,748 0 0 0.0
2004 Q3 1,322 0 0 0.0
2004 Q2 1,790 0 0 0.0
2004 Q1 1,916 2 1 1043.8
2003 Q4 2,177 0 0 0.0
2003 Q3 1,723 0 0 0.0
2003 Q2 2,063 0 0 0.0
2003 Q1 2,221 0 0 0.0
2002 Q4 2,037 0 0 0.0
2002 Q3 2,053 0 0 0.0
2002 Q2 1,902 0 0 0.0
2002 Q1 2,074 0 0 0.0
2001 Q4 1,693 2 0 1181.3
2001 Q3 1,668 0 0 0.0
2001 Q2 1,591 0 0 0.0
2001 Q1 1,699 0 0 0.0
2000 Q4 1,506 1 0 664.0
2000 Q3 2,255 4 1 1773.8
No fatalities recorded at this mine.

Reportable incidents

4 on file

2004 · 1 incident

June 9, 2004 CA · Metal/Non-Metal water truck operator SLIP OR FALL OF PERSON
A-1 Aggregates Inc · Fall to the walkway or working surface

INJURED EMPLOYEE WAS SHUTTING OFF WATER VALVE & PIPE HANDLE BROKE & EE FELL TO THE GROUND.

2003 · 1 incident

February 18, 2003 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
A-1 Aggregates Inc · Struck by... (Not Elsewhere Classified)

WORKING ON A PIECE OF EQUIPMENT.

2002 · 1 incident

September 24, 2002 CA · Metal/Non-Metal miner, nec HANDLING OF MATERIALS
A-1 Aggregates Inc · Caught in, under or between a moving and a stationary object

WHILE PRYING ROCK LOOSE FROM SCREEN, HE SMASHED HIS RIGHT THUMB.

2001 · 1 incident

November 2, 2001 CA · Metal/Non-Metal driver, jeep driver, tractor operator POWERED HAULAGE
A-1 Aggregates Inc · Struck against a moving object

FOLOLOWING TOO CLOSE TO EMBANKMENT WHILE BACKING UP THE WATER TRUCK.