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Portable Jaw Plant #3: 45 MSHA citations Metal/Non-Metal

Controlled by John P Moyna
Des Moines, Polk County, IA  ·  Intermittent
MSHA Mine ID: 1302417

Portable Jaw Plant #3 has $12K 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
1
Years on record
2022
Latest incident
May 2022
Compliance record
MSHA citations since 2010
45
citations
13
significant & substantial
$12,293
proposed penalties
$12,293
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See C. J. Moyna & Sons, LLC.'s full MSHA compliance history →
Inspection activity
MSHA inspections since 2010
21
inspections on record
371
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: 371 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: 2015-04-15.
On record since 2015.
Source: MSHA imminent-danger order records, updated weekly.

Portable Jaw Plant #3 has $12K 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.
$12K
proposed penalties
$12K
current assessed
$12K
paid to date
$0
outstanding
44 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-23.
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.
29.5%
significant & substantial
9.1%
high negligence or reckless
29.5%
reasonably likely or greater
54.5%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 11.4% low, 79.5% moderate, 9.1% 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: 2026-03-04
13%
of limit-tested samples over the exposure limit
16
samples
8
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz41 over
  • Respirable dust, <.1mg7
  • Nuisance dust, respirable, <1% Qtz5
Show the individual readings (16)
Date Contaminant Concentration Limit Conc / limit Occupation
2026-03-04 Quartz, respirable, >1% Qtz 0.89 0.68 1.31 Crusher Oper/Worker
2026-03-04 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-12-15 Respirable dust, <.1mg 0 Truck Driver
2021-12-15 Nuisance dust, respirable, <1% Qtz 0.34 10 0.03 Front-end Loader Operator
2019-11-20 Quartz, respirable, >1% Qtz 0.42 0.53 0.79 Bobcat Operator
2019-11-20 Quartz, respirable, >1% Qtz 0.14 Front-end Loader Operator
2019-11-20 Respirable dust, <.1mg 0 Truck Driver
2019-04-09 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-04-09 Nuisance dust, respirable, <1% Qtz 0.26 10 0.03 Crusher Oper/Worker
2019-04-09 Nuisance dust, respirable, <1% Qtz 0.19 10 0.02 Backhoe Operator
2014-03-25 Nuisance dust, respirable, <1% Qtz 0.13 10 0.01 Backhoe Operator
2014-03-25 Quartz, respirable, >1% Qtz 0.63 1.7 0.37 Supervisor, Co. Official
2013-04-09 Respirable dust, <.1mg 0 Front-end Loader Operator
2011-03-15 Nuisance dust, respirable, <1% Qtz 0.19 10 0.02 Crusher Oper/Worker
2011-03-15 Respirable dust, <.1mg 0 Front-end Loader Operator
2011-03-15 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. C. J. Moyna & Sons, LLC. 2010 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 1
2023 0
2022 9
2021 10
2020 5
2019 7
2018 12
2017 7
2016 8
2015 5
2014 5
2013 2
2012 2
2011 4
2010 2
Source: MSHA quarterly employment and production, updated weekly.

Portable Jaw Plant #3 sits in Polk County, Iowa, 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.
Polk County, Iowa · Population 497,441
0.0%
Mining share of county employment
$81,621
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 0 0 0
2026 Q1 504 3 1 5952.4
2023 Q2 0 0 0
2023 Q1 0 0 0
2022 Q4 994 0 0 0.0
2022 Q3 3,201 0 0 0.0
2022 Q2 5,628 0 0 0.0
2022 Q1 3,030 1 0 330.0
Show 47 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2021 Q4 3,258 1 0 306.9
2021 Q3 2,027 1 1 493.3
2021 Q2 2,210 0 0 0.0
2021 Q1 0 0 0
2020 Q4 3,092 0 0 0.0
2020 Q3 3,187 0 0 0.0
2020 Q2 3,632 0 0 0.0
2020 Q1 0 0 0
2019 Q4 960 3 0 3125.0
2019 Q3 4,556 0 0 0.0
2019 Q2 2,187 3 1 1371.7
2019 Q1 0 0 0
2018 Q4 2,151 0 0 0.0
2018 Q3 4,341 0 0 0.0
2018 Q2 5,655 0 0 0.0
2018 Q1 418 0 0 0.0
2017 Q4 1,403 3 1 2138.3
2017 Q3 3,150 0 0 0.0
2017 Q2 3,123 0 0 0.0
2017 Q1 754 4 0 5305.0
2016 Q4 3,271 0 0 0.0
2016 Q3 3,467 0 0 0.0
2016 Q2 4,480 1 0 223.2
2016 Q1 1,536 0 0 0.0
2015 Q4 1,877 0 0 0.0
2015 Q3 3,118 0 0 0.0
2015 Q2 1,804 4 2 2217.3
2015 Q1 169 0 0 0.0
2014 Q4 1,502 0 0 0.0
2014 Q3 1,247 0 0 0.0
2014 Q2 2,871 0 0 0.0
2014 Q1 423 2 0 4728.1
2013 Q4 1,582 0 0 0.0
2013 Q3 890 0 0 0.0
2013 Q2 368 0 0 0.0
2013 Q1 0 0 0
2012 Q4 648 0 0 0.0
2012 Q3 379 0 0 0.0
2012 Q2 1,129 0 0 0.0
2012 Q1 773 0 0 0.0
2011 Q4 1,464 7 4 4781.4
2011 Q3 948 0 0 0.0
2011 Q2 2,129 0 0 0.0
2011 Q1 413 4 1 9685.2
2010 Q4 358 0 0 0.0
2010 Q3 1,199 3 0 2502.1
2010 Q2 1,049 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2022 · 1 incident

May 9, 2022 IA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
C. J. Moyna & Sons, LLC. · Struck against stationary object

Changing screens on the screener. EE was on the bottom deck tightening nuts/washers. EE reached for nut/washer by EE's hip, as EE brought right arm up, EE hit EE's elbow on the frame of the screener. At the time, EE stated that EE hit funny bone. EE did not have any pain. The next day EE had a bump on elbow. EE went to doctor on 05/16/2022, scans shown fractured elbow.