PORTABLE CRUSHING DEPT 437 has $15K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at PORTABLE CRUSHING DEPT 437.
Fatalities
0
Total incidents
12
Years on record
1996–2023
Latest incident
May 2023
Compliance record
MSHA citations since 2001
114
citations
20
significant & substantial
$15,298
proposed penalties
$15,298
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.
Rate withheld: 621 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
PORTABLE CRUSHING DEPT 437 has $15K 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.
$15K
proposed penalties
$15K
current assessed
$15K
paid to date
$0
outstanding
110 assessments are final orders; 1 contested dockets.
Of $1K in penalties contested before the Commission, $1K was upheld in final decisions.
As of the most recent assessment on 2026-02-10.
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.
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: 2025-03-25
13%
of limit-tested samples over the exposure limit
39
samples
32
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz204 over
Nuisance dust, respirable, <1% Qtz11
Respirable dust, <.1mg6
Nuisance dust, total, <1% Qtz2
Show the individual readings (39)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2003-02-12
Quartz, respirable, >1% Qtz
1.22
0.45
2.71
Utility Man
2003-02-12
Quartz, respirable, >1% Qtz
0.87
0.74
1.18
Truck Driver
2003-02-12
Quartz, respirable, >1% Qtz
0.98
0.68
1.44
Front-end Loader Operator
2003-02-12
Quartz, respirable, >1% Qtz
0.6
0.49
1.22
Truck Driver
2025-03-25
Respirable dust, <.1mg
0
Crusher Oper/Worker
2025-03-25
Respirable dust, <.1mg
0
Truck Driver
2024-09-17
Respirable dust, <.1mg
0
Truck Driver
2024-09-17
Nuisance dust, respirable, <1% Qtz
0.16
10
0.02
Crusher Oper/Worker
2023-03-28
Quartz, respirable, >1% Qtz
0.97
2.33
0.42
Front-end Loader Operator
2023-03-28
Nuisance dust, total, <1% Qtz
3.08
10
0.31
Cleanup Man
2023-03-28
Quartz, respirable, >1% Qtz
0.23
Truck Driver
2021-12-07
Respirable dust, <.1mg
0
Cleanup Man
2021-12-07
Nuisance dust, respirable, <1% Qtz
0.16
10
0.02
Supervisor, Co. Official
2021-12-07
Respirable dust, <.1mg
0
Truck Driver
2021-12-07
Nuisance dust, total, <1% Qtz
0.55
10
0.06
Front-end Loader Operator
2017-12-06
Quartz, respirable, >1% Qtz
0.14
1.13
0.12
Front-end Loader Operator
2017-12-06
Nuisance dust, respirable, <1% Qtz
0.22
10
0.02
Truck Driver
2017-12-06
Quartz, respirable, >1% Qtz
0.35
1.1
0.32
Bobcat Operator
2014-03-26
Nuisance dust, respirable, <1% Qtz
0.73
10
0.07
Crusher Oper/Worker
2014-03-26
Nuisance dust, respirable, <1% Qtz
0.21
10
0.02
Truck Driver
2014-03-26
Nuisance dust, respirable, <1% Qtz
0.29
10
0.03
Front-end Loader Operator
2014-03-26
Nuisance dust, respirable, <1% Qtz
0.33
10
0.03
Supervisor, Co. Official
2014-03-26
Nuisance dust, respirable, <1% Qtz
0.13
10
0.01
Truck Driver
2012-06-27
Nuisance dust, respirable, <1% Qtz
0.15
10
0.02
Cleanup Man
2012-04-17
Respirable dust, <.1mg
0
Truck Driver
2012-04-17
Quartz, respirable, >1% Qtz
0.51
2.55
0.20
Cleanup Man
2008-09-17
Nuisance dust, respirable, <1% Qtz
0.3
10
0.03
Crusher Oper/Worker
2007-04-04
Quartz, respirable, >1% Qtz
0.29
1.87
0.16
Mechanic
2004-11-03
Quartz, respirable, >1% Qtz
0.17
1.09
0.16
Crusher Oper/Worker
2004-11-03
Quartz, respirable, >1% Qtz
0.33
2.2
0.15
Front-end Loader Operator
2004-11-03
Nuisance dust, respirable, <1% Qtz
0.14
10
0.01
Truck Driver
2004-11-03
Quartz, respirable, >1% Qtz
0.56
2.38
0.24
Laborer, Bullgang
2004-11-03
Quartz, respirable, >1% Qtz
0.46
2.15
0.21
Cleanup Man
2003-12-30
Quartz, respirable, >1% Qtz
0.4
2.12
0.19
Crusher Oper/Worker
2003-12-30
Quartz, respirable, >1% Qtz
0.24
2.01
0.12
Laborer, Bullgang
2003-12-30
Quartz, respirable, >1% Qtz
0.51
1.8
0.28
Laborer, Bullgang
2003-12-30
Quartz, respirable, >1% Qtz
0.18
1.18
0.15
Laborer, Bullgang
2003-12-30
Quartz, respirable, >1% Qtz
0.17
1.46
0.12
Laborer, Bullgang
2003-02-12
Quartz, respirable, >1% Qtz
0.39
0.8
0.49
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.
PORTABLE CRUSHING DEPT 437 recorded 0.00 reportable injury cases per 100 full-time workers in 2007.
Injury rate, 2007
ⓘ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 3.30 and the all-US-mining average was 3.77 cases per 100 workers.
In Iowa, metal and nonmetal mining averaged 3.26 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
2007 *
0.00
0.00
0.000
2006 *
8.94
8.94
0.000
2005 *
0.00
0.00
0.000
2004 *
0.00
0.00
0.000
2003 *
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
7
2025
6
2024
6
2023
6
2022
7
2021
6
2020
5
2019
6
2018
8
2017
8
2016
7
2015
6
2014
6
2013
6
2012
5
2011
6
2010
6
2009
7
2008
9
2007
11
2006
10
2005
10
2004
9
2003
9
2002
9
2001
8
2000
7
Source: MSHA quarterly employment and production, updated weekly.
PORTABLE CRUSHING DEPT 437 sits in Benton County, Iowa, where the Census mining category is 0.6% 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.
Benton County, Iowa · Population 25,698
0.6%
Mining share of county employment
$84,742
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
4,203
0
0
0.0
2026 Q1
2,865
1
0
349.0
2025 Q4
3,729
0
0
0.0
2025 Q3
4,342
0
0
0.0
2025 Q2
4,223
0
0
0.0
2025 Q1
1,204
4
0
3322.3
2024 Q4
3,605
0
0
0.0
2024 Q3
4,603
2
0
434.5
Show 98 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
4,383
0
0
0.0
2024 Q1
2,499
0
0
0.0
2023 Q4
3,154
2
0
634.1
2023 Q3
3,980
0
0
0.0
2023 Q2
4,170
0
0
0.0
2023 Q1
1,617
0
0
0.0
2022 Q4
3,588
0
0
0.0
2022 Q3
4,276
0
0
0.0
2022 Q2
4,679
0
0
0.0
2022 Q1
1,985
0
0
0.0
2021 Q4
2,905
3
1
1032.7
2021 Q3
3,935
2
0
508.3
2021 Q2
4,809
0
0
0.0
2021 Q1
1,350
0
0
0.0
2020 Q4
2,972
0
0
0.0
2020 Q3
3,174
0
0
0.0
2020 Q2
2,944
0
0
0.0
2020 Q1
1,358
6
1
4418.3
2019 Q4
2,763
0
0
0.0
2019 Q3
3,589
1
0
278.6
2019 Q2
2,501
0
0
0.0
2019 Q1
484
0
0
0.0
2018 Q4
3,051
0
0
0.0
2018 Q3
3,796
0
0
0.0
2018 Q2
3,902
0
0
0.0
2018 Q1
612
3
0
4902.0
2017 Q4
3,607
2
0
554.5
2017 Q3
4,732
3
1
634.0
2017 Q2
4,444
2
0
450.0
2017 Q1
2,282
6
1
2629.3
2016 Q4
3,523
0
0
0.0
2016 Q3
4,195
0
0
0.0
2016 Q2
3,829
1
0
261.2
2016 Q1
2,624
0
0
0.0
2015 Q4
2,690
0
0
0.0
2015 Q3
4,112
0
0
0.0
2015 Q2
3,923
0
0
0.0
2015 Q1
1,901
0
0
0.0
2014 Q4
3,142
0
0
0.0
2014 Q3
3,086
0
0
0.0
2014 Q2
3,362
0
0
0.0
2014 Q1
715
5
0
6993.0
2013 Q4
3,037
0
0
0.0
2013 Q3
3,352
3
0
895.0
2013 Q2
3,667
0
0
0.0
2013 Q1
1,001
0
0
0.0
2012 Q4
649
0
0
0.0
2012 Q3
2,830
0
0
0.0
2012 Q2
3,289
5
1
1520.2
2012 Q1
792
0
0
0.0
2011 Q4
3,114
0
0
0.0
2011 Q3
4,695
0
0
0.0
2011 Q2
4,039
0
0
0.0
2011 Q1
2,337
0
0
0.0
2010 Q4
3,019
3
1
993.7
2010 Q3
3,677
0
0
0.0
2010 Q2
3,282
0
0
0.0
2010 Q1
1,421
5
0
3518.6
2009 Q4
3,349
0
0
0.0
2009 Q3
3,349
0
0
0.0
2009 Q2
3,505
2
0
570.6
2009 Q1
3,609
0
0
0.0
2008 Q4
4,638
0
0
0.0
2008 Q3
3,786
0
0
0.0
2008 Q2
6,035
0
0
0.0
2008 Q1
2,348
3
0
1277.7
2007 Q4
5,913
0
0
0.0
2007 Q3
4,158
0
0
0.0
2007 Q2
7,482
10
2
1336.5
2007 Q1
3,494
0
0
0.0
2006 Q4
4,893
0
0
0.0
2006 Q3
6,217
0
0
0.0
2006 Q2
6,070
1
1
164.7
2006 Q1
5,184
0
0
0.0
2005 Q4
5,208
4
2
768.0
2005 Q3
6,054
0
0
0.0
2005 Q2
6,017
0
0
0.0
2005 Q1
3,684
0
0
0.0
2004 Q4
5,228
3
1
573.8
2004 Q3
5,906
0
0
0.0
2004 Q2
6,107
0
0
0.0
2004 Q1
4,328
0
0
0.0
2003 Q4
5,628
9
1
1599.1
2003 Q3
5,569
0
0
0.0
2003 Q2
5,350
0
0
0.0
2003 Q1
4,047
8
5
1976.8
2002 Q4
4,387
0
0
0.0
2002 Q3
4,761
0
0
0.0
2002 Q2
5,535
2
0
361.3
2002 Q1
3,128
0
0
0.0
2001 Q4
5,080
0
0
0.0
2001 Q3
4,928
0
0
0.0
2001 Q2
4,629
7
0
1512.2
2001 Q1
3,925
0
0
0.0
2000 Q4
4,527
0
0
0.0
2000 Q3
3,557
0
0
0.0
2000 Q2
4,680
0
0
0.0
2000 Q1
3,838
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
12 on file
2023 · 1 incident
May 16, 2023IA · Metal/Non-Metalhaul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driverSLIP OR FALL OF PERSON
Miner was standing on a 6 foot step ladder when the miner tried to step down the miner's foot got caught and the miner fell head first with head and shoulder hitting the ground first. ***Miner had personal neck surgery previously. No medical would see them. We took next available with previous surgeon. Miner was immediately released to full duty.***
2012 · 2 incidents
June 27, 2012IA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerSLIP OR FALL OF PERSON
Great River Material EE was standing next to his endloader at the time of blasting of a rock ledge. A piece of fly rock from the blast struck his right leg at knee level, breaking his leg.
2006 · 1 incident
March 20, 2006IA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
The primary crusher was shut down due to a boulder. Our plant man/mech had positioned himself to open chamber door, he did so before impeller had come to a complete stop. Then thinking he could stop the impeller, he put his hand into the pinch point between impeller and door opening.
1999 · 3 incidents
August 26, 1999IA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
EE AND OTHER WERE HOLDING TO SCREENS UPICKT ON GROUND INTO LOADER BUCKET. LOADER PULL UP EE GAVE STOP SIGNAL, LOADER HIT SCREEN'S KNOCKING THEN OUT OF ARE HOLD. EE SPUNG TO GET AWAY BUT SCREEN HOOK GRAB TO OF HIS HAND, TEARING THE SKIN OPEN.
1998 · 1 incident
February 4, 1998IA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanMACHINERY
DRIVE SHAFT WAS STUCK ON HAMMER MILL. SUPERVISOR AND EMPLOYEE BOTH TRYING TO PRY LOOSE WORKING FROM OPPOSITE SIDES SUPERVISOR DID PRY SHAFT LOOSE NOT REALIZING EMPLOYEES ARM WAS IN THE WAY. HAMMERS WEDGED EMPLOYEES ARM AGAINST THE DOOR.
1996 · 2 incidents
August 19, 1996IA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS