Alden Portable Plant #2 has $11K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
13
Years on record
1986–2022
Latest incident
Mar 2022
Compliance record
MSHA citations since 2001
78
citations
8
significant & substantial
$11,339
proposed penalties
$10,908
paid to date
96% of proposed penalties paid to date, a $431 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: 640 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.
2
Section 107(a) orders
Most recent order: 2014-01-29.
On record since 2011.
Source: MSHA imminent-danger order records, updated weekly.
Alden Portable Plant #2 has $11K in proposed MSHA penalties and $0 outstanding across 2 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.
$11K
proposed penalties
$11K
current assessed
$11K
paid to date
$0
outstanding
76 assessments are final orders; 2 contested dockets.
Of $2K in penalties contested before the Commission, $1K was upheld in final decisions.
As of the most recent assessment on 2026-04-07.
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.
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.
2citations taken to the federal commission · 3% of citations on record
Settled
2 · 100%
100%
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 2 decided S&S contests · industry: 79%
24%
Penalty reduction in decided contests
$2K proposed, $1K 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 2014-05-07.
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.
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: 2024-10-31
0%
of limit-tested samples over the exposure limit
32
samples
21
limit-tested
Most sampled contaminants
Nuisance dust, respirable, <1% Qtz11
Respirable dust, <.1mg11
Quartz, respirable, >1% Qtz8
Nuisance dust, total, <1% Qtz2
Show the individual readings (32)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2024-10-31
Respirable dust, <.1mg
0
Crusher Oper/Worker
2023-03-22
Respirable dust, <.1mg
0
Backhoe Operator
2021-11-02
Respirable dust, <.1mg
0
Truck Driver
2021-11-02
Respirable dust, <.1mg
0
Truck Driver
2021-07-28
Nuisance dust, respirable, <1% Qtz
0.18
10
0.02
Utility Man
2021-07-28
Respirable dust, <.1mg
0
Truck Driver
2019-03-27
Nuisance dust, respirable, <1% Qtz
0.15
10
0.02
Bobcat Operator
2019-03-27
Nuisance dust, total, <1% Qtz
4.01
10
0.40
Crusher Oper/Worker
2019-03-27
Nuisance dust, total, <1% Qtz
3.41
10
0.34
Bobcat Operator
2018-02-21
Respirable dust, <.1mg
0
Front-end Loader Operator
2018-02-21
Nuisance dust, respirable, <1% Qtz
0.22
10
0.02
Cleanup Man
2018-02-21
Nuisance dust, respirable, <1% Qtz
0.15
10
0.02
Truck Driver
2014-03-19
Quartz, respirable, >1% Qtz
0.88
2.53
0.35
Crusher Oper/Worker
2014-03-19
Nuisance dust, respirable, <1% Qtz
0.21
10
0.02
Utility Man
2014-03-19
Respirable dust, <.1mg
0
Truck Driver
2014-03-19
Respirable dust, <.1mg
0
Truck Driver
2014-03-19
Nuisance dust, respirable, <1% Qtz
0.17
10
0.02
Front-end Loader Operator
2013-03-13
Respirable dust, <.1mg
0
Backhoe Operator
2013-03-13
Quartz, respirable, >1% Qtz
0.15
1.33
0.11
Truck Driver
2013-03-13
Nuisance dust, respirable, <1% Qtz
0.17
10
0.02
Crusher Oper/Worker
2013-03-13
Nuisance dust, respirable, <1% Qtz
0.2
10
0.02
Front-end Loader Operator
2012-03-07
Quartz, respirable, >1% Qtz
0.47
2.18
0.22
Crusher Oper/Worker
2012-03-07
Quartz, respirable, >1% Qtz
0.66
2.6
0.25
Truck Driver
2009-02-11
Respirable dust, <.1mg
0
Front-end Loader Operator
2009-02-11
Respirable dust, <.1mg
0
Front-end Loader Operator
2003-11-19
Nuisance dust, respirable, <1% Qtz
1.48
10
0.15
Crusher Oper/Worker
2003-11-19
Nuisance dust, respirable, <1% Qtz
0.24
10
0.02
Laborer, Bullgang
2003-11-19
Nuisance dust, respirable, <1% Qtz
0.14
10
0.01
Laborer, Bullgang
2001-05-17
Quartz, respirable, >1% Qtz
0.35
2.27
0.15
Front-end Loader Operator
2001-05-17
Quartz, respirable, >1% Qtz
0.54
2.8
0.19
Crusher Oper/Worker
2001-05-17
Quartz, respirable, >1% Qtz
0.5
2.7
0.19
Truck Driver
2001-05-17
Quartz, respirable, >1% Qtz
1
3.22
0.31
Dry Screen Plant 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.
Alden Portable Plant #2 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 *
0.00
0.00
0.000
2022 *
5.55
0.00
0.000
2021 *
0.00
0.00
0.000
2020 *
5.88
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
11
2025
10
2024
11
2023
12
2022
16
2021
15
2020
16
2019
15
2018
17
2017
18
2016
16
2015
11
2014
10
2013
9
2012
9
2011
17
2010
10
2009
10
2008
10
2007
9
2006
10
2005
9
2004
8
2003
8
2002
10
2001
9
2000
9
Source: MSHA quarterly employment and production, updated weekly.
Alden Portable Plant #2 sits in Hardin County, Iowa, where the Census mining category is 0.3% 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.
Hardin County, Iowa · Population 16,729
0.3%
Mining share of county employment
$64,906
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
5,798
3
0
517.4
2026 Q1
4,162
0
0
0.0
2025 Q4
4,580
0
0
0.0
2025 Q3
5,141
0
0
0.0
2025 Q2
6,013
0
0
0.0
2025 Q1
4,823
0
0
0.0
2024 Q4
5,803
0
0
0.0
2024 Q3
6,404
0
0
0.0
Show 98 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
6,724
0
0
0.0
2024 Q1
4,030
1
0
248.1
2023 Q4
5,973
0
0
0.0
2023 Q3
7,457
0
0
0.0
2023 Q2
7,140
0
0
0.0
2023 Q1
6,688
0
0
0.0
2022 Q4
8,273
0
0
0.0
2022 Q3
10,035
0
0
0.0
2022 Q2
11,047
0
0
0.0
2022 Q1
6,708
0
0
0.0
2021 Q4
8,004
4
0
499.8
2021 Q3
7,789
0
0
0.0
2021 Q2
8,727
0
0
0.0
2021 Q1
6,410
0
0
0.0
2020 Q4
7,779
0
0
0.0
2020 Q3
7,904
0
0
0.0
2020 Q2
10,661
0
0
0.0
2020 Q1
7,676
0
0
0.0
2019 Q4
7,952
1
0
125.8
2019 Q3
8,457
0
0
0.0
2019 Q2
9,413
0
0
0.0
2019 Q1
9,470
1
0
105.6
2018 Q4
9,352
0
0
0.0
2018 Q3
8,219
1
0
121.7
2018 Q2
9,471
0
0
0.0
2018 Q1
7,430
1
0
134.6
2017 Q4
6,620
0
0
0.0
2017 Q3
8,834
4
0
452.8
2017 Q2
8,884
0
0
0.0
2017 Q1
4,427
1
0
225.9
2016 Q4
8,474
0
0
0.0
2016 Q3
11,132
0
0
0.0
2016 Q2
12,063
0
0
0.0
2016 Q1
8,524
0
0
0.0
2015 Q4
5,453
3
0
550.2
2015 Q3
7,637
2
0
261.9
2015 Q2
8,128
0
0
0.0
2015 Q1
5,385
3
0
557.1
2014 Q4
6,437
0
0
0.0
2014 Q3
7,258
0
0
0.0
2014 Q2
6,286
0
0
0.0
2014 Q1
4,330
4
1
923.8
2013 Q4
5,369
0
0
0.0
2013 Q3
5,889
0
0
0.0
2013 Q2
5,874
3
1
510.7
2013 Q1
6,932
5
2
721.3
2012 Q4
4,817
0
0
0.0
2012 Q3
5,900
0
0
0.0
2012 Q2
4,865
0
0
0.0
2012 Q1
5,363
2
0
372.9
2011 Q4
6,444
3
1
465.5
2011 Q3
9,685
0
0
0.0
2011 Q2
6,552
0
0
0.0
2011 Q1
4,626
3
1
648.5
2010 Q4
6,199
0
0
0.0
2010 Q3
6,970
0
0
0.0
2010 Q2
8,898
0
0
0.0
2010 Q1
4,455
2
0
448.9
2009 Q4
6,355
0
0
0.0
2009 Q3
7,079
0
0
0.0
2009 Q2
6,449
0
0
0.0
2009 Q1
4,694
7
0
1491.3
2008 Q4
5,217
0
0
0.0
2008 Q3
6,366
0
0
0.0
2008 Q2
6,198
0
0
0.0
2008 Q1
5,625
5
0
888.9
2007 Q4
5,686
0
0
0.0
2007 Q3
5,398
0
0
0.0
2007 Q2
6,494
0
0
0.0
2007 Q1
4,542
0
0
0.0
2006 Q4
5,837
0
0
0.0
2006 Q3
6,255
0
0
0.0
2006 Q2
6,192
0
0
0.0
2006 Q1
4,983
0
0
0.0
2005 Q4
5,821
0
0
0.0
2005 Q3
6,213
0
0
0.0
2005 Q2
6,079
0
0
0.0
2005 Q1
4,851
1
0
206.1
2004 Q4
5,679
0
0
0.0
2004 Q3
5,339
0
0
0.0
2004 Q2
5,496
0
0
0.0
2004 Q1
971
0
0
0.0
2003 Q4
3,341
4
0
1197.2
2003 Q3
3,444
0
0
0.0
2003 Q2
5,218
0
0
0.0
2003 Q1
3,213
3
0
933.7
2002 Q4
5,001
0
0
0.0
2002 Q3
5,831
0
0
0.0
2002 Q2
5,562
0
0
0.0
2002 Q1
5,029
0
0
0.0
2001 Q4
4,501
2
0
444.3
2001 Q3
5,110
0
0
0.0
2001 Q2
5,839
6
1
1027.6
2001 Q1
2,994
0
0
0.0
2000 Q4
3,115
0
0
0.0
2000 Q3
4,478
0
0
0.0
2000 Q2
5,314
0
0
0.0
2000 Q1
3,509
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
13 on file
2022 · 1 incident
March 14, 2022IA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDLING OF MATERIALS
EE bent down to lift up on one end of a wooden pallet to slide it under some electrical cords. Just as the EE lifted one end of the pallet off the ground, EE felt a pulling/snapping sensation in the upper left arm that caused EE severe pain. EE was forced to stop the task and ask for assistance. Conditions at the time were dry, sunny, and cool.
2016 · 1 incident
March 26, 2016IA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
Employee was ducking under a conveyor to walk from one side to the other. He came up short of the clearance and hit his right ear on a crossbar causing a laceration to his ear requiring stitches.
2002 · 1 incident
July 31, 2002IA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
EE HAD REMOVED AIR CONDITIONING FAN UNIT TO REPLACE A WIRE TO THE FAN SWITCH. AFTER THE WIRE WAS FIXED THE EE PUT HIS HAND UP BY FAN TO SEE IF IT WAS RUNNING. IT WAS! EE CUT THE TIP OF HIS LT. MIDDLE FINGER REQUIRING 6 STITCHES TO CLOSE.
2000 · 3 incidents
August 11, 2000IA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
EMPLOYEE WAS PULLING A COUNTER WEIGHT OFF OF A GEAR. WHEN THE COUNTERWEIGHT SLID FREE, IT WAS TOO HEAVY FOR THE EMPLOYEE. HE DROPPED THE COUNTERWEIGHT AND CAUGHT HIS HAND BETWEEN THE COUNTER WEIGHT AND CATWALK AROUND A SCREEN BOX. DESPITE THE WEARING OF GLOVES, THIS EMPLOYEE RECEIVED A LACERATION REQUIRING STITCHES ON HIS LEFT HAND.
EE WAS REACHING INTO A CUPBOARD UNDERNEATH A STOVE TO RETRIEVE SOME PAPERWORK. SHE CUT HER RIGHTINDEX FINGER ON THE 2ND JOINT & RECD STITCHES TO CLOSE THE WOUND. SHE WAS CUT BY A SHARP STEEL PLATE FROM THE STOVE TOP
February 21, 2000IA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
EE WAS CHANGING BELTS ON SECONDARY CRUSHER. BEARING SPACER BLOCK WAS BEING PUT IN PLACE WHEN IT SLIPPED OUT OF EE S HAND AND PINCHED THE TIP OF HIS FINGER BETWEEN BLOCK AND FRAME. ALTHROUGHT E E WAS WEARING GLOVES THE RESULTING LACERATION CAUSED THE NEED FOR 3 STITCHES TO CLOSE THE WOUND.
1990 · 2 incidents
September 11, 1990IA · Metal/Non-Metalcoal/ore shovel operator, shoveler, power shovelerPOWERED HAULAGE
EMPLOYEE TRIED TO START A SLIPPING U-BELT FROM SLIPPING. HE GRABBED IT AND GOT HIS FINGER BETWEEN U-BELT AND DRIVE PULLEY REQUIRING 7 STITCHES.
August 10, 1990IA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON