Mining Incidents
Search Operators Mines Alerts Research Controllers Fatalgrams About
English Español
← Back to search

Des Moines Portable #1: 107 MSHA citations Metal/Non-Metal

WINTERSET, Madison County, IA  ·  Active
MSHA Mine ID: 1300150

Des Moines Portable #1 has $22K in proposed MSHA penalties and $24 outstanding across 3 contested dockets, plus health sampling and the full incident record.

Watch this mine

Email me when a new MSHA incident is filed at Des Moines Portable #1.

Fatalities
0
Total incidents
14
Years on record
1986–2023
Latest incident
Dec 2023
Compliance record
MSHA citations since 2000
107
citations
10
significant & substantial
$22,057
proposed penalties
$16,772
paid to date
76% of proposed penalties paid to date, a $5,285 gap.
Source: MSHA violations data, updated weekly.
See Martin Marietta Materials Inc.'s full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
62
inspections on record
969
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: 969 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Des Moines Portable #1 has $22K in proposed MSHA penalties and $24 outstanding across 3 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.
$22K
proposed penalties
$17K
current assessed
$17K
paid to date
$24
outstanding
103 assessments are final orders; 3 contested dockets.
Of $10K in penalties contested before the Commission, $3K was upheld in final decisions.
As of the most recent assessment on 2026-06-17.
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.
9.3%
significant & substantial
1.9%
high negligence or reckless
9.3%
reasonably likely or greater
55.1%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 14.0% low, 84.1% moderate, 1.9% 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.
9 citations taken to the federal commission · 8% of citations on record
  • Settled 7 · 78%
  • Vacated or withdrawn 2 · 22%
25%
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 4 decided S&S contests · industry: 79%
73%
Penalty reduction in decided contests
$10K proposed, $3K 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 2018-08-16.
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 2017-0486 Settlement Miller 2018 $5K → $1K
CENT 2018-0424 Settlement Manning 2019 $3K → $775
CENT 2017-0027 Settlement Miller 2017 $1K → $465
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: 2026-02-25
4%
of limit-tested samples over the exposure limit
40
samples
28
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz221 over
  • Respirable dust, <.1mg7
  • Nuisance dust, respirable, <1% Qtz6
  • Nuisance dust, total, <1% Qtz4
Show the individual readings (40)
Date Contaminant Concentration Limit Conc / limit Occupation
2005-01-25 Quartz, respirable, >1% Qtz 0.63 0.54 1.17 Cleanup Man
2026-02-25 Quartz, respirable, >1% Qtz 0.2 Truck Driver
2026-02-25 Respirable dust, <.1mg 0 Front-end Loader Operator
2026-02-25 Quartz, respirable, >1% Qtz 0.53 1.12 0.47 Crusher Oper/Worker
2025-02-04 Quartz, respirable, >1% Qtz 0.28 1.05 0.27 Cleanup Man
2025-02-04 Quartz, respirable, >1% Qtz 0.32 0.97 0.33 Crusher Oper/Worker
2024-02-07 Unlisted Particulate, respirable, <1% Qtz 0.49 Bulldozer Operator
2024-02-07 Respirable dust, <.1mg 0 Truck Driver
2023-01-05 Respirable dust, <.1mg 0 Cleanup Man
2023-01-05 Respirable dust, <.1mg 0 Crusher Oper/Worker
2020-04-14 Nuisance dust, total, <1% Qtz 0 10 0.00 Bobcat Operator
2020-04-14 Nuisance dust, total, <1% Qtz 0 10 0.00 Crusher Oper/Worker
2020-04-14 Quartz, respirable, >1% Qtz 0.31 Truck Driver
2019-10-09 Respirable dust, <.1mg 0 Truck Driver
2019-10-09 Quartz, respirable, >1% Qtz 0.26 Bobcat Operator
2019-03-06 Quartz, respirable, >1% Qtz 0.51 1.22 0.42 Crusher Oper/Worker
2019-03-06 Quartz, respirable, >1% Qtz 0.25 Cleanup Man
2013-11-20 Respirable dust, <.1mg 0 Backhoe Operator
2013-11-20 Nuisance dust, respirable, <1% Qtz 0.12 10 0.01 Cleanup Man
2013-11-20 Quartz, respirable, >1% Qtz 0.28 2.16 0.13 Crusher Oper/Worker
2012-01-10 Quartz, respirable, >1% Qtz 0.55 1.55 0.35 Laborer, Bullgang
2012-01-10 Nuisance dust, respirable, <1% Qtz 0.34 10 0.03 Front-end Loader Operator
2005-01-25 Quartz, respirable, >1% Qtz 0.29 0.76 0.38 Truck Driver
2005-01-25 Quartz, respirable, >1% Qtz 0.31 0.69 0.45 Crusher Oper/Worker
2005-01-25 Quartz, respirable, >1% Qtz 1.07 1.73 0.62 Drill Operator, Rotary
2005-01-25 Quartz, respirable, >1% Qtz 0.71 0.82 0.87 Laborer, Bullgang
2004-05-18 Quartz, respirable, >1% Qtz 0.14 1.05 0.13 Crusher Oper/Worker
2004-05-18 Nuisance dust, respirable, <1% Qtz 0.65 10 0.07 Crusher Oper/Worker
2004-05-18 Nuisance dust, respirable, <1% Qtz 0.29 10 0.03 Laborer, Bullgang
2004-05-18 Nuisance dust, respirable, <1% Qtz 0.21 10 0.02 Laborer, Bullgang
2004-05-18 Nuisance dust, respirable, <1% Qtz 0.13 10 0.01 Laborer, Bullgang
2003-03-06 Quartz, respirable, >1% Qtz 0.7 0.93 0.75 Utility Man
2003-03-06 Respirable dust, <.1mg 0 Truck Driver
2003-03-06 Quartz, respirable, >1% Qtz 0.52 1.98 0.26 Front-end Loader Operator
2003-03-06 Quartz, respirable, >1% Qtz 1.36 1.82 0.75 Crusher Oper/Worker
2002-04-17 Quartz, respirable, >1% Qtz 0.17 1.62 0.10 Truck Driver
2002-04-17 Nuisance dust, total, <1% Qtz 3.79 10 0.38 Truck Driver
2002-04-17 Nuisance dust, total, <1% Qtz 5.33 10 0.53 Front-end Loader Operator
2002-04-17 Quartz, respirable, >1% Qtz 0.4 1.51 0.26 Crusher Oper/Worker
2002-04-17 Quartz, respirable, >1% Qtz 2.4 2.6 0.92 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.

Des Moines Portable #1 recorded 0.00 reportable injury cases per 100 full-time workers in 2025.

Injury rate, 2025
ⓘ 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 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Iowa, metal and nonmetal mining averaged 1.72 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
2025 * 0.00 0.00 0.000
2024 * 0.00 0.00 0.000
2023 * 4.57 0.00 0.000
2022 * 0.00 0.00 0.000
2021 * 0.00 0.00 0.000
2020 * 0.00 0.00 0.000
2019 * 0.00 0.00 0.000
2018 * 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.
Ownership history
  1. P & M Stone Company Inc 1950 to 1980
  2. Welp & Mc Carten Inc 1980 to 1986
  3. Martin Marietta Materials Inc. 1986 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 20
2025 21
2024 23
2023 20
2022 19
2021 15
2020 20
2019 22
2018 22
2017 22
2016 22
2015 22
2014 21
2013 21
2012 22
2011 22
2010 20
2009 19
2008 20
2007 20
2006 23
2005 24
2004 11
2003 12
2002 13
2001 11
2000 12
Source: MSHA quarterly employment and production, updated weekly.

Des Moines Portable #1 sits in Madison 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.
Madison County, Iowa · Population 16,760
0.0%
Mining share of county employment
$89,542
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 10,139 4 0 394.5
2026 Q1 9,425 2 0 212.2
2025 Q4 9,344 0 0 0.0
2025 Q3 9,305 0 0 0.0
2025 Q2 11,588 0 0 0.0
2025 Q1 9,438 0 0 0.0
2024 Q4 11,128 0 0 0.0
2024 Q3 11,495 1 0 87.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 12,202 0 0 0.0
2024 Q1 12,907 0 0 0.0
2023 Q4 11,081 0 0 0.0
2023 Q3 11,175 0 0 0.0
2023 Q2 11,030 0 0 0.0
2023 Q1 10,470 2 0 191.0
2022 Q4 9,222 0 0 0.0
2022 Q3 11,606 0 0 0.0
2022 Q2 10,980 0 0 0.0
2022 Q1 11,190 0 0 0.0
2021 Q4 440 0 0 0.0
2021 Q3 10,828 0 0 0.0
2021 Q2 10,626 0 0 0.0
2021 Q1 9,401 0 0 0.0
2020 Q4 11,366 2 0 176.0
2020 Q3 10,974 0 0 0.0
2020 Q2 10,787 2 0 185.4
2020 Q1 11,259 0 0 0.0
2019 Q4 10,756 5 0 464.9
2019 Q3 11,060 0 0 0.0
2019 Q2 12,428 5 0 402.3
2019 Q1 9,389 1 0 106.5
2018 Q4 9,028 0 0 0.0
2018 Q3 9,774 0 0 0.0
2018 Q2 13,564 2 0 147.4
2018 Q1 10,162 0 0 0.0
2017 Q4 8,073 2 0 247.7
2017 Q3 12,529 0 0 0.0
2017 Q2 12,382 3 0 242.3
2017 Q1 11,384 7 0 614.9
2016 Q4 11,843 0 0 0.0
2016 Q3 11,571 4 1 345.7
2016 Q2 11,652 0 0 0.0
2016 Q1 10,453 5 1 478.3
2015 Q4 12,581 0 0 0.0
2015 Q3 11,225 0 0 0.0
2015 Q2 11,610 0 0 0.0
2015 Q1 10,054 2 0 198.9
2014 Q4 11,412 2 0 175.3
2014 Q3 11,288 0 0 0.0
2014 Q2 11,047 0 0 0.0
2014 Q1 9,078 1 0 110.2
2013 Q4 11,071 2 0 180.7
2013 Q3 7,552 0 0 0.0
2013 Q2 10,901 0 0 0.0
2013 Q1 8,218 0 0 0.0
2012 Q4 8,643 0 0 0.0
2012 Q3 10,199 0 0 0.0
2012 Q2 11,474 2 0 174.3
2012 Q1 10,182 4 2 392.9
2011 Q4 10,879 0 0 0.0
2011 Q3 11,807 0 0 0.0
2011 Q2 11,611 0 0 0.0
2011 Q1 9,525 5 1 524.9
2010 Q4 11,064 0 0 0.0
2010 Q3 11,099 4 0 360.4
2010 Q2 11,106 0 0 0.0
2010 Q1 5,452 1 0 183.4
2009 Q4 9,439 1 0 105.9
2009 Q3 8,458 0 0 0.0
2009 Q2 9,502 0 0 0.0
2009 Q1 8,548 0 0 0.0
2008 Q4 10,704 3 0 280.3
2008 Q3 10,547 0 0 0.0
2008 Q2 11,541 0 0 0.0
2008 Q1 6,573 0 0 0.0
2007 Q4 9,547 0 0 0.0
2007 Q3 9,245 0 0 0.0
2007 Q2 10,454 0 0 0.0
2007 Q1 12,042 0 0 0.0
2006 Q4 13,352 1 0 74.9
2006 Q3 13,090 0 0 0.0
2006 Q2 13,106 0 0 0.0
2006 Q1 9,905 0 0 0.0
2005 Q4 12,108 4 3 330.4
2005 Q3 12,842 0 0 0.0
2005 Q2 10,832 0 0 0.0
2005 Q1 8,867 1 1 112.8
2004 Q4 7,258 0 0 0.0
2004 Q3 7,027 0 0 0.0
2004 Q2 6,972 0 0 0.0
2004 Q1 4,689 0 0 0.0
2003 Q4 6,713 0 0 0.0
2003 Q3 6,730 0 0 0.0
2003 Q2 6,045 0 0 0.0
2003 Q1 5,844 5 1 855.6
2002 Q4 5,795 0 0 0.0
2002 Q3 5,875 0 0 0.0
2002 Q2 8,097 6 0 741.0
2002 Q1 6,354 0 0 0.0
2001 Q4 6,040 0 0 0.0
2001 Q3 6,176 0 0 0.0
2001 Q2 6,027 2 0 331.8
2001 Q1 4,481 0 0 0.0
2000 Q4 4,343 0 0 0.0
2000 Q3 7,609 0 0 0.0
2000 Q2 7,958 4 0 502.6
2000 Q1 5,603 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

14 on file

2023 · 1 incident

December 5, 2023 IA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Martin Marietta Materials Inc. · Caught in, under or between two or more moving objects

Employee was moving liner plates on a pallet and caught finger between two liner plates

2020 · 1 incident

January 29, 2020 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Martin Marietta Materials Inc. · Over-exertion (Not Elsewhere Classified)

Employee was getting off of the truck when EE slipped on slick material spraining the ankle. After visiting the doctor EE was given a brace to wear.

2011 · 1 incident

June 27, 2011 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Martin Marietta Materials Inc. · Struck against stationary object

Getting out of a stock pile truck. Pushed down on the door handle, breaking the handle and lacerating the left hand on the broken piece.

2005 · 1 incident

October 10, 2005 IA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Martin Marietta Materials Inc. · Struck against a moving object

Dump area was getting undercut. Loader operator warned truck driver about situation and no response. Next load brought up, he backed up too far and the pile gave way and the truck slid down the material and flipped over onto its top. Truck operator was not wearing a seatbelt.

2000 · 2 incidents

June 8, 2000 IA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Martin Marietta Materials Inc. · Over-exertion in pulling or pushing objects

PULLING ON A SIX INCH SUCTION HOSE TO ATTACH TO A PUMP EMPLOYEE HAD SURGERY ON 6/19/00.

May 8, 2000 IA · Metal/Non-Metal truck driver HANDLING OF MATERIALS
Martin Marietta Materials Inc. · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS REMOVING A TARP STRAP THAT WAS HOLDING ELECTRICAL CORDS; STRAP SNAPPED BACK AND STRUCK HIM IN THE CHIN, CAUSING A LACERATION REQUIRING STITCHES.

1996 · 1 incident

September 4, 1996 IA · Metal/Non-Metal drill operator HANDTOOLS (NONPOWERED)
Martin Marietta Materials Inc. · Struck by flying object

DRILLER WAS REMOVING DRILL BIT FROM BROKEN DRILLSTEEL. THE BALL PEEN HAMMER HE WAS USING CHIPPEDAND THE CHIP LODGED IN THE DRILLER'S CHEST. THE CHIP WAS LATER REMOVED BY A DOCTOR.

1994 · 2 incidents

August 30, 1994 IA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator POWERED HAULAGE
Martin Marietta Materials Inc. · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS USING A PRY BAR TO START A WIPER BACK WITHIN A CONVEYOR WHILE IT WAS IN OPERATION. THE MOVING BELT CAUGHT THE BELT, PULLED IT FROM THE EMPLOYEE'S HAND AND GASHED HIS RIGHT FOREARM .

January 13, 1994 IA · Metal/Non-Metal backhoe operator, trackhoe operator MACHINERY
Martin Marietta Materials Inc. · Caught in, under or between (Not Elsewhere Classified)

WHILE DRILL WAS RUNNING THE NEW HIR OPERATOR REACHED UP HIGH ON THE DRILL STEEL AND CLOSED HIS RIGHT HAND AROUND IT. THE DRILL STEEL CAUGHT HIS GLOVE AND NEARLY WRAPPED HIM UP IN IT BEFORE HE COULD SHUT OFF THE DRILL.

1989 · 3 incidents

June 5, 1989 IA · Metal/Non-Metal quality control technician, laboratory technician, laboratory assistant SLIP OR FALL OF PERSON
Martin Marietta Materials Inc. · Fall from scaffolds, walkways, platforms

EMPL WAS HELPING CHANGE SOME SCREENS WHEN LEG SLIPPED BETWEEN CATWALK & SCREEN BOX SCRAPING RIGHT SIDE OF RIGHT LEG JUST BELOW KNEE.

June 3, 1989 IA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Materials Inc. · Struck by flying object

STRIKING BOLT WITH MAUL TO REMOVE IT FROM FRAME PC OF METAL FLEW STRUCK HIM IN L KNEE PUNCTURING IT.

March 7, 1989 IA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Martin Marietta Materials Inc. · Fall to the walkway or working surface

FINISHED CHECK ING PUMP AND WAS HEADED BACK TO HIS LOADER WHEN HE SLIPPED ON ICE AND DISLOCATED R. SHUOLDER.

1988 · 1 incident

1986 · 1 incident

June 10, 1986 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Welp & Mc Carten Inc · Over-exertion (Not Elsewhere Classified)

WAS CLIMBING DO4N A LADDER ON THE SCREEN PLANT, WHEN TOUCHED THE GROUND HE TWISTED HIS RIGHT KNEE. NO SERIOUS PROBLEM, X-RAYED AND RETURNED TO WORK.