Mining Incidents

Portable Crushing Dept 420: 101 MSHA citations Metal/Non-Metal

Controlled by Manaco Corporation
Dewitt, Clinton County, IA  ·  Intermittent
MSHA Mine ID: 1302062

Portable Crushing Dept 420 has $18K 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
20
Years on record
1987–2025
Latest incident
Jun 2025
Compliance record
MSHA citations since 2000
101
citations
26
significant & substantial
$18,369
proposed penalties
$18,369
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
49
inspections on record
712
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: 712 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 420 has $18K 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.
$18K
proposed penalties
$18K
current assessed
$18K
paid to date
$0
outstanding
100 assessments are final orders; 1 contested dockets.
Of $2K in penalties contested before the Commission, $2K was upheld in final decisions.
As of the most recent assessment on 2025-03-27.
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.
25.7%
significant & substantial
2.0%
high negligence or reckless
25.7%
reasonably likely or greater
58.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 12.9% low, 85.1% moderate, 2.0% 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.
3 citations taken to the federal commission · 3% of citations on record
  • Settled 1 · 33%
  • Vacated or withdrawn 2 · 67%
33%
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 3 decided S&S contests · industry: 79%
43%
Penalty reduction in decided contests
$4K proposed, $2K 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 2010-05-07.
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
CENT 2009-743M Settlement Rae 2012 $2K → $2K
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: 2023-09-20
6%
of limit-tested samples over the exposure limit
26
samples
16
limit-tested
Most sampled contaminants
  • Nuisance dust, total, <1% Qtz41 over
  • Quartz, respirable, >1% Qtz9
  • Respirable dust, <.1mg7
  • Nuisance dust, respirable, <1% Qtz6
Show the individual readings (26)
Date Contaminant Concentration Limit Conc / limit Occupation
2017-12-12 Nuisance dust, total, <1% Qtz 28.41 10 2.84 Truck Driver
2023-09-20 Quartz, respirable, >1% Qtz 0.13 Crusher Oper/Worker
2023-09-20 Quartz, respirable, >1% Qtz 0.3 Truck Driver
2023-09-20 Nuisance dust, respirable, <1% Qtz 0.12 10 0.01 Front-end Loader Operator
2022-09-27 Respirable dust, <.1mg 0 Truck Driver
2022-09-27 Respirable dust, <.1mg 0 Cleanup Man
2022-09-27 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-10-02 Quartz, respirable, >1% Qtz 0.45 Truck Driver
2019-10-02 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-10-02 Nuisance dust, respirable, <1% Qtz 0.19 10 0.02 Crusher Oper/Worker
2017-12-12 Nuisance dust, total, <1% Qtz 4.75 10 0.48 Front-end Loader Operator
2017-12-12 Nuisance dust, total, <1% Qtz 7.69 10 0.77 Truck Driver
2017-12-12 Nuisance dust, total, <1% Qtz 8.87 10 0.89 Cleanup Man
2012-05-02 Nuisance dust, respirable, <1% Qtz 0.36 10 0.04 Crusher Oper/Worker
2012-05-02 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-05-02 Nuisance dust, respirable, <1% Qtz 0.59 10 0.06 Truck Driver
2009-03-10 Respirable dust, <.1mg 0 Backhoe Operator
2009-03-10 Quartz, respirable, >1% Qtz 0.32 1.14 0.28 Truck Driver
2009-03-10 Quartz, respirable, >1% Qtz 0.4 0.86 0.47 Cleanup Man
2006-04-05 Quartz, respirable, >1% Qtz 0.49 2.5 0.20 Crusher Oper/Worker
2005-07-27 Quartz, respirable, >1% Qtz 0.64 3.19 0.20 Truck Driver
2005-07-27 Quartz, respirable, >1% Qtz 2.55 2.58 0.99 Crusher Oper/Worker
2004-05-19 Quartz, respirable, >1% Qtz 0.35 2.44 0.14 Crusher Oper/Worker
2004-05-19 Respirable dust, <.1mg 0 Front-end Loader Operator
2004-05-19 Nuisance dust, respirable, <1% Qtz 0.21 10 0.02 Truck Driver
2004-05-19 Nuisance dust, respirable, <1% Qtz 0.24 10 0.02 Truck Driver
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 420 recorded 0.00 reportable injury cases per 100 full-time workers in 2000.

Injury rate, 2000
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
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 4.77 and the all-US-mining average was 5.64 cases per 100 workers.
In Iowa, metal and nonmetal mining averaged 4.77 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.
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.
Ownership history
  1. B L Anderson Inc 1985 to 1988
  2. Vulcan Materials Company 1988 to 1995
  3. Wendling Quarries Inc 1995 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 9
2025 7
2024 7
2023 8
2022 8
2021 7
2020 7
2019 7
2018 7
2017 7
2016 7
2015 7
2014 6
2013 5
2012 5
2011 10
2010 15
2009 14
2008 11
2007 8
2006 8
2005 7
2004 7
2003 7
2002 7
2001 10
2000 16
Source: MSHA quarterly employment and production, updated weekly.

Portable Crushing Dept 420 sits in Clinton County, Iowa, 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.
Clinton County, Iowa · Population 46,383
0.2%
Mining share of county employment
$65,177
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 4,945 0 0 0.0
2026 Q1 4,423 0 0 0.0
2025 Q4 4,180 0 0 0.0
2025 Q3 5,109 0 0 0.0
2025 Q2 4,565 0 0 0.0
2025 Q1 753 1 0 1328.0
2024 Q4 3,060 0 0 0.0
2024 Q3 5,159 1 0 193.8
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 4,385 0 0 0.0
2024 Q1 1,404 0 0 0.0
2023 Q4 4,411 1 0 226.7
2023 Q3 5,098 0 0 0.0
2023 Q2 4,886 0 0 0.0
2023 Q1 1,387 0 0 0.0
2022 Q4 3,648 0 0 0.0
2022 Q3 4,811 0 0 0.0
2022 Q2 5,611 0 0 0.0
2022 Q1 2,171 0 0 0.0
2021 Q4 4,236 2 0 472.1
2021 Q3 4,956 0 0 0.0
2021 Q2 5,192 4 1 770.4
2021 Q1 2,050 0 0 0.0
2020 Q4 4,030 0 0 0.0
2020 Q3 5,746 0 0 0.0
2020 Q2 5,653 0 0 0.0
2020 Q1 3,125 0 0 0.0
2019 Q4 4,528 4 0 883.4
2019 Q3 5,153 0 0 0.0
2019 Q2 5,112 0 0 0.0
2019 Q1 1,264 0 0 0.0
2018 Q4 3,693 0 0 0.0
2018 Q3 5,184 0 0 0.0
2018 Q2 5,194 0 0 0.0
2018 Q1 1,556 1 0 642.7
2017 Q4 4,288 3 1 699.6
2017 Q3 5,550 0 0 0.0
2017 Q2 5,363 4 1 745.9
2017 Q1 1,300 0 0 0.0
2016 Q4 4,312 0 0 0.0
2016 Q3 5,695 4 1 702.4
2016 Q2 5,736 0 0 0.0
2016 Q1 1,443 0 0 0.0
2015 Q4 4,720 0 0 0.0
2015 Q3 4,542 0 0 0.0
2015 Q2 5,183 0 0 0.0
2015 Q1 1,478 0 0 0.0
2014 Q4 3,550 1 1 281.7
2014 Q3 5,538 0 0 0.0
2014 Q2 6,036 0 0 0.0
2014 Q1 763 0 0 0.0
2013 Q4 4,343 3 0 690.8
2013 Q3 4,298 0 0 0.0
2013 Q2 3,873 4 1 1032.8
2013 Q1 1,043 0 0 0.0
2012 Q4 3,615 0 0 0.0
2012 Q3 3,965 0 0 0.0
2012 Q2 4,994 5 1 1001.2
2012 Q1 1,553 0 0 0.0
2011 Q4 3,566 0 0 0.0
2011 Q3 5,182 0 0 0.0
2011 Q2 4,799 0 0 0.0
2011 Q1 1,471 1 0 679.8
2010 Q4 3,546 0 0 0.0
2010 Q3 4,303 2 0 464.8
2010 Q2 5,606 0 0 0.0
2010 Q1 1,056 0 0 0.0
2009 Q4 3,226 0 0 0.0
2009 Q3 5,298 0 0 0.0
2009 Q2 4,600 0 0 0.0
2009 Q1 1,573 6 2 3814.4
2008 Q4 4,568 0 0 0.0
2008 Q3 5,614 0 0 0.0
2008 Q2 4,631 0 0 0.0
2008 Q1 1,328 7 0 5271.1
2007 Q4 4,616 0 0 0.0
2007 Q3 4,506 0 0 0.0
2007 Q2 4,157 0 0 0.0
2007 Q1 1,758 0 0 0.0
2006 Q4 4,234 0 0 0.0
2006 Q3 4,424 0 0 0.0
2006 Q2 4,412 4 0 906.6
2006 Q1 2,586 0 0 0.0
2005 Q4 3,805 0 0 0.0
2005 Q3 4,183 9 1 2151.6
2005 Q2 4,776 0 0 0.0
2005 Q1 1,646 0 0 0.0
2004 Q4 3,865 0 0 0.0
2004 Q3 3,518 0 0 0.0
2004 Q2 4,033 1 1 248.0
2004 Q1 1,291 0 0 0.0
2003 Q4 3,666 0 0 0.0
2003 Q3 4,081 6 0 1470.2
2003 Q2 3,969 0 0 0.0
2003 Q1 2,087 0 0 0.0
2002 Q4 4,223 0 0 0.0
2002 Q3 4,034 0 0 0.0
2002 Q2 3,930 0 0 0.0
2002 Q1 2,852 0 0 0.0
2001 Q4 3,763 0 0 0.0
2001 Q3 4,417 3 1 679.2
2001 Q2 4,670 0 0 0.0
2001 Q1 3,037 0 0 0.0
2000 Q4 5,683 0 0 0.0
2000 Q3 6,090 0 0 0.0
2000 Q2 5,256 0 0 0.0
2000 Q1 4,577 10 5 2184.8
No fatalities recorded at this mine.

Reportable incidents

20 on file

2025 · 1 incident

June 3, 2025 IA · Metal/Non-Metal blaster, shooter, shotfirer, explosive worker, powder gang/monkey HANDLING OF MATERIALS
Wendling Quarries Inc · Over-exertion in pulling or pushing objects

Employee was stemming a blast hole. When they were finished they were using their foot to level it off when their knee gave out.

2023 · 1 incident

2022 · 2 incidents

October 25, 2022 IA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Wendling Quarries Inc · Struck by... (Not Elsewhere Classified)

EE was using a scrapper to remove material from the side of the surge bin. EE's right hand came into contact with the roller guard during this process resulting in a broken right pinkie finger.

May 12, 2022 IA · Metal/Non-Metal refuse truck driver, backfill truck driver, stock pile truck driver SLIP OR FALL OF PERSON
Wendling Quarries Inc · Over-exertion (Not Elsewhere Classified)

This incident became reportable when the miner finally agreed to go to the doctor and an MRI revealed a torn meniscus on 7-18-22. On the date of the incident the miner said miner was fine and no medical care was needed. On May 12th the miner slipped on the bumper of miner's stockpile truck when shutting the hood during pre-operation inspection.

2021 · 1 incident

May 13, 2021 IA · Metal/Non-Metal refuse truck driver, backfill truck driver, stock pile truck driver POWERED HAULAGE
Wendling Quarries Inc · Caught in, under or between running or meshing objects

THE MINER GOT CAUGHT IN THE ROLLER OF THE TAIL PULLEY ON THE OVERHEAD CONVEYOR ON THE SCREEN BELT. LEFT WRIST AND FOREARM HAVE BROKEN BONES. RIGHT ARM HAS CUTS AND FRICTION BURNS. THE TIP OF RIGHT INDEX FINGER WAS CUT OFF AT THE FIRST KNUCKLE AND THE FINGER WAS SKINNED.

2020 · 1 incident

June 11, 2020 IA · Metal/Non-Metal miner, prospector, nec POWERED HAULAGE
Wendling Quarries Inc · Struck by flying object

OPERATING SKID LOADER WHEN THE WIND PICKED UP AND BLEW A PARTICLE INTO MINER'S RIGHT EYE.

2017 · 1 incident

December 5, 2017 IA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Wendling Quarries Inc · Struck by... (Not Elsewhere Classified)

REPLACING IMPACT HAMMERS. NUT WAS STUCK IN SOCKET. MINER PUT BOLT BACK IN THE NUT AND WAS HITTING THE NUT WHEN THE SOCKET SLIPPED AND HIT MINER'S LEFT INDEX FINGER.

2014 · 3 incidents

November 17, 2014 IA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Wendling Quarries Inc · Over-exertion in lifting objects

Doing Maintenance changing screens and tweaked back

August 28, 2014 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver OTHER
Wendling Quarries Inc · (Not Elsewhere Classified)

Truck Driver for Manatts suffered a heart attack while on property

April 14, 2014 IA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator OTHER
Wendling Quarries Inc · Struck by flying object

Plant man was working on the piggy back conveyor for the surge bin, he had the guard propped up, a gust of wind came knocking the guard down hitting him on the helmet and causing a laceration in his forehead.

2012 · 2 incidents

September 20, 2012 IA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Wendling Quarries Inc · Struck against stationary object

Employee was changing a screen on a screen plant and the wrench he was using slipped off the nut causing him to bump his elbow.

February 21, 2012 IA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator DISORDERS (REPEATED TRAUMA)
Wendling Quarries Inc · (Not Elsewhere Classified)

Hearing loss due to plant and equipment operations.

2005 · 2 incidents

August 16, 2005 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Wendling Quarries Inc · Over-exertion in lifting objects

CHANGING HAMMERS IN THE IMPACT. NEXT MORNING WOKE WITH MUSCLE SPASMS IN BACK. DR SENT HIM TO PHYSICAL THERAPY

July 26, 2005 IA · Metal/Non-Metal barge/boat/dredge/towbarge/towboat/leach operator, riverman, deck hand HANDTOOLS (NONPOWERED)
Wendling Quarries Inc · Struck by... (Not Elsewhere Classified)

Using a pry bar to lock router to turn hammers on mill. Missed hole on spinner with pry bar and pry bar hit hand.

2004 · 1 incident

July 28, 2004 IA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Wendling Quarries Inc · Struck by... (Not Elsewhere Classified)

EE was checking to see if a wire was loose on the fan in the air conditioning unit in his loader. EE did not turn the motor off on the loader and stuck his fingers too far into the unit. EE had partial amputation of the very tip of middle finger on right hand requiring two stitches.

2001 · 1 incident

October 2, 2001 IA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Wendling Quarries Inc · Struck by... (Not Elsewhere Classified)

EE WAS STANDING ON A LADDER ATTACHED TO THE PRIMARY CRUSHER HOPPER, GUIDING A LOADER INT HE ATTEMPT TO CLEAR A JAMMED BOULDER. IN THE ATTEMPT, THE ROCKS SHIFTED IN AN UNATICIPATED MANNER, CAUS ING ONE ROCK TO SPIN AROUND AND STRIKE HIS RIGHTHAND WHICH WAS GRIPPING THE TOP EDGE OF THE HOPPER. INJURIED RIGHT MIDDLE FINGER, LACERATIONS OF SKIN, LACERATION OF EXTENSOR TENDON, OPEN FRAC

1992 · 1 incident

April 6, 1992 IA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator DISORDERS (REPEATED TRAUMA)
Vulcan Materials Company · Over-exertion (Not Elsewhere Classified)

ON 04-06-92 EMPLOYEE WAS DIAGNOSED WITH BILLATERIAL CARPAL TUNNEL SYNDROME EMPLOYEE HAS WORKED AS A TRUCK DRIVER & LABORER SINCE 05-11-68 EMPLOYEE WAS DRIVING A HAUL TRUCK WHEN HE REPORTED THE SYMPTOMS

1991 · 2 incidents

July 1, 1991 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Vulcan Materials Company · Struck by... (Not Elsewhere Classified)

PROCESS OF CHANGING HAMMER TIPS USING SLEDGE HAMMER TO FREE TIP METAL CAME OFF HIT LEG

April 16, 1991 IA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
Vulcan Materials Company · Struck against stationary object

EMPLOYEE WAS USING A PICK AX TO STRIKE MATERIAL WHILE ATTEMPTING TO REMOVE IT FROM THE FEEDER FLOOR. HE HIT THE METAL FLOOR WITH THE AX, WHICH RESULTED IN THE AGGRAVATION OF A PRE-EXISTING INJ URY THAT HAD BEEN SUSTAINED IN A NON-WORK RELATED INCIDENT. THE PHYSICIAN DIAGNOSED A BRUISED HAND AND PLACED THE EMPLOYEE ON NO WORK STATUS.

1987 · 1 incident

March 26, 1987 IA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator FALLING/SLIDING/ROLLING MATERIALS
B L Anderson Inc · Struck by falling object

EMPL HANDING TO9CH TO ANOTHER EMPL WHO WAS WORKING INSIDE IMPACT BREAKER WHILE PASSING TORCH SMALL PIECE OF IRON BROKE OFF OF CARRIER BAR AND STRUCK EMPL ON CHIN -LACERATION REQ STITCHES.