Mining Incidents

PORTABLE CRUSHING PLANT #204: 87 MSHA citations Metal/Non-Metal

BMC AGGREGATES LC · Surface
Sumner, Fayette County, IA  ·  Intermittent
MSHA Mine ID: 1302113

PORTABLE CRUSHING PLANT #204 has $19K 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
7
Years on record
1989–2025
Latest incident
Dec 2025
Compliance record
MSHA citations since 2000
87
citations
19
significant & substantial
$18,760
proposed penalties
$18,760
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
52
inspections on record
569
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: 569 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 PLANT #204 has $19K 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.
$19K
proposed penalties
$19K
current assessed
$19K
paid to date
$0
outstanding
86 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-10-07.
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.
22.1%
significant & substantial
9.3%
high negligence or reckless
22.1%
reasonably likely or greater
55.8%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 12.8% low, 77.9% moderate, 9.3% 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: 2022-09-28, 3 years ago
0%
of limit-tested samples over the exposure limit
24
samples
16
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz13
  • Nuisance dust, respirable, <1% Qtz5
  • Unlisted Particulate, respirable, <1% Qtz4
  • Nuisance dust, total, <1% Qtz1
Show the individual readings (24)
Date Contaminant Concentration Limit Conc / limit Occupation
2022-09-28 Nuisance dust, total, <1% Qtz 4.11 10 0.41 Truck Driver
2022-09-28 Quartz, respirable, >1% Qtz 0.33 Truck Driver
2019-03-26 Quartz, respirable, >1% Qtz 0.91 2.12 0.43 Truck Driver
2019-03-26 Nuisance dust, respirable, <1% Qtz 0.17 10 0.02 Truck Driver
2019-03-26 Quartz, respirable, >1% Qtz 0.43 Front-end Loader Operator
2019-03-26 Quartz, respirable, >1% Qtz 0.33 Truck Driver
2014-03-19 Unlisted Particulate, respirable, <1% Qtz 0.43 Crusher Oper/Worker
2014-03-19 Unlisted Particulate, respirable, <1% Qtz 0.13 Supervisor, Co. Official
2013-05-01 Unlisted Particulate, respirable, <1% Qtz 0.34 Supervisor, Co. Official
2013-05-01 Unlisted Particulate, respirable, <1% Qtz 0.6 Front-end Loader Operator
2012-12-11 Quartz, respirable, >1% Qtz 0.22 1.36 0.16 Truck Driver
2012-12-11 Respirable dust, <.1mg 0 Cleanup Man
2009-03-11 Quartz, respirable, >1% Qtz 0.25 1.47 0.17 Truck Driver
2009-03-11 Quartz, respirable, >1% Qtz 0.31 1.43 0.22 Utility Man
2009-03-11 Quartz, respirable, >1% Qtz 1.29 1.81 0.71 Truck Driver
2009-03-11 Quartz, respirable, >1% Qtz 0.18 1.16 0.16 Truck Driver
2007-04-10 Quartz, respirable, >1% Qtz 0.87 2.02 0.43 Truck Driver
2007-04-10 Quartz, respirable, >1% Qtz 0.92 3.13 0.29 Truck Driver
2007-04-10 Nuisance dust, respirable, <1% Qtz 0.38 10 0.04 Dragline Operator
2003-10-29 Quartz, respirable, >1% Qtz 0.35 1.94 0.18 Laborer, Bullgang
2003-10-29 Nuisance dust, respirable, <1% Qtz 0.18 10 0.02 Crusher Oper/Worker
2003-10-29 Quartz, respirable, >1% Qtz 0.15 1.46 0.10 Truck Driver
2003-10-29 Nuisance dust, respirable, <1% Qtz 0.15 10 0.02 Truck Driver
2003-10-29 Nuisance dust, respirable, <1% Qtz 0.56 10 0.06 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 PLANT #204 recorded 0.00 reportable injury cases per 100 full-time workers in 2012.

Injury rate, 2012
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 2.48 and the all-US-mining average was 2.96 cases per 100 workers.
In Iowa, metal and nonmetal mining averaged 2.79 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
2012 * 0.00 0.00 0.000
2011 * 0.00 0.00 0.000
2010 * 0.00 0.00 0.000
2009 * 0.00 0.00 0.000
2008 * 0.00 0.00 0.000
2007 * 0.00 0.00 0.000
2006 * 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.
Ownership history
  1. Paul Niemann Construction Company, Inc. 1985 to 2019
  2. BMC Aggregates LC 2019 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 8
2025 8
2024 6
2023 9
2022 8
2021 8
2020 8
2019 9
2018 8
2017 8
2016 7
2015 7
2014 6
2013 8
2012 9
2011 9
2010 9
2009 9
2008 9
2007 8
2006 8
2005 8
2004 8
2003 8
2002 10
2001 9
2000 7
Source: MSHA quarterly employment and production, updated weekly.

PORTABLE CRUSHING PLANT #204 sits in Fayette County, Iowa, where the Census mining category is 0.4% 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.
Fayette County, Iowa · Population 19,393
0.4%
Mining share of county employment
$58,764
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 5,965 0 0 0.0
2026 Q1 821 0 0 0.0
2025 Q4 5,891 0 0 0.0
2025 Q3 5,115 0 0 0.0
2025 Q2 5,904 0 0 0.0
2025 Q1 497 0 0 0.0
2024 Q4 5,207 2 0 384.1
2024 Q3 4,545 2 0 440.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 2,530 0 0 0.0
2024 Q1 0 0 0
2023 Q4 4,333 0 0 0.0
2023 Q3 5,104 0 0 0.0
2023 Q2 4,067 0 0 0.0
2023 Q1 3,038 3 0 987.5
2022 Q4 4,018 0 0 0.0
2022 Q3 5,809 0 0 0.0
2022 Q2 4,942 1 0 202.3
2022 Q1 2,362 0 0 0.0
2021 Q4 5,267 0 0 0.0
2021 Q3 5,359 0 0 0.0
2021 Q2 4,612 0 0 0.0
2021 Q1 1,919 2 0 1042.2
2020 Q4 4,201 0 0 0.0
2020 Q3 3,649 3 2 822.1
2020 Q2 4,536 0 0 0.0
2020 Q1 3,632 0 0 0.0
2019 Q4 6,273 0 0 0.0
2019 Q3 6,219 0 0 0.0
2019 Q2 4,994 0 0 0.0
2019 Q1 727 2 0 2751.0
2018 Q4 5,161 0 0 0.0
2018 Q3 5,446 0 0 0.0
2018 Q2 4,905 0 0 0.0
2018 Q1 3,427 3 0 875.4
2017 Q4 4,750 0 0 0.0
2017 Q3 5,336 0 0 0.0
2017 Q2 4,461 0 0 0.0
2017 Q1 2,002 0 0 0.0
2016 Q4 4,350 0 0 0.0
2016 Q3 4,299 0 0 0.0
2016 Q2 4,226 0 0 0.0
2016 Q1 2,887 3 0 1039.1
2015 Q4 3,894 0 0 0.0
2015 Q3 4,624 0 0 0.0
2015 Q2 4,423 0 0 0.0
2015 Q1 1,471 0 0 0.0
2014 Q4 3,693 0 0 0.0
2014 Q3 4,291 0 0 0.0
2014 Q2 4,074 0 0 0.0
2014 Q1 1,794 1 1 557.4
2013 Q4 3,771 0 0 0.0
2013 Q3 5,149 0 0 0.0
2013 Q2 6,532 2 1 306.2
2013 Q1 2,624 0 0 0.0
2012 Q4 5,700 5 2 877.2
2012 Q3 6,878 1 0 145.4
2012 Q2 6,463 0 0 0.0
2012 Q1 3,835 2 0 521.5
2011 Q4 5,896 0 0 0.0
2011 Q3 6,328 0 0 0.0
2011 Q2 6,130 3 2 489.4
2011 Q1 3,357 0 0 0.0
2010 Q4 5,526 0 0 0.0
2010 Q3 6,783 0 0 0.0
2010 Q2 6,738 0 0 0.0
2010 Q1 3,842 5 1 1301.4
2009 Q4 5,264 0 0 0.0
2009 Q3 6,355 0 0 0.0
2009 Q2 6,148 0 0 0.0
2009 Q1 3,318 5 1 1506.9
2008 Q4 5,753 0 0 0.0
2008 Q3 6,940 4 0 576.4
2008 Q2 6,712 0 0 0.0
2008 Q1 2,104 0 0 0.0
2007 Q4 4,911 0 0 0.0
2007 Q3 6,514 0 0 0.0
2007 Q2 5,875 8 1 1361.7
2007 Q1 3,363 0 0 0.0
2006 Q4 5,458 0 0 0.0
2006 Q3 5,681 0 0 0.0
2006 Q2 5,926 0 0 0.0
2006 Q1 3,673 0 0 0.0
2005 Q4 5,768 4 3 693.5
2005 Q3 6,512 0 0 0.0
2005 Q2 5,014 4 3 797.8
2005 Q1 2,138 7 2 3274.1
2004 Q4 5,407 0 0 0.0
2004 Q3 6,042 0 0 0.0
2004 Q2 4,624 0 0 0.0
2004 Q1 793 0 0 0.0
2003 Q4 5,009 1 0 199.6
2003 Q3 6,104 0 0 0.0
2003 Q2 5,867 0 0 0.0
2003 Q1 3,526 0 0 0.0
2002 Q4 6,185 2 0 323.4
2002 Q3 7,010 0 0 0.0
2002 Q2 7,551 3 0 397.3
2002 Q1 4,613 5 0 1083.9
2001 Q4 6,348 0 0 0.0
2001 Q3 6,726 0 0 0.0
2001 Q2 6,902 0 0 0.0
2001 Q1 2,762 0 0 0.0
2000 Q4 4,731 0 0 0.0
2000 Q3 6,320 0 0 0.0
2000 Q2 5,221 3 0 574.6
2000 Q1 2,335 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

7 on file

2025 · 1 incident

December 1, 2025 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
BMC Aggregates LC · Fall to the walkway or working surface

EE was walking to tool-house, on recently cleared snow, slipped and fell on shoulder. EE went home that night with mild discomfort. Came in the next morning wanting to get checked out.

2022 · 1 incident

August 22, 2022 IA · Metal/Non-Metal refuse truck driver, backfill truck driver, stock pile truck driver HANDTOOLS (NONPOWERED)
BMC Aggregates LC · Struck against stationary object

Shoveling hopper out when hand slipped off shovel handle and stuck side of bin, causing pain and bruising in right fifth (pinky) finger. Examination showed no breaks but finger was splinted to protect finger.

2021 · 2 incidents

October 12, 2021 IA · Metal/Non-Metal refuse truck driver, backfill truck driver, stock pile truck driver SLIP OR FALL OF PERSON
BMC Aggregates LC · Over-exertion (Not Elsewhere Classified)

Employee was exiting Skid Steer Loader. Misstepped and came down hard on heel of right foot. Sprained ankle and deep tissue bruise to right foot.

June 4, 2021 IA · Metal/Non-Metal outside foreman, leadman HANDLING OF MATERIALS
BMC Aggregates LC · Caught in, under or between a moving and a stationary object

Employee was hooking up screening plant to loader hitch. While placing pin in hitch, loader shifted forward, causing pin to tilt in hitch, resulting in employees fingers being pinched between hitch pin and counterweight of loader.

2016 · 1 incident

August 8, 2016 IA · Metal/Non-Metal miner, prospector, nec HANDTOOLS (NONPOWERED)
Paul Niemann Construction Company, Inc. · Struck by... (Not Elsewhere Classified)

Employee was using utility knife to cut conveyor belt when utility knife slipped and cut palm of left hand. Laceration required 4 stitches and tetanus shot. Employee was treated at local hospital and released with no restrictions.

2014 · 1 incident

June 17, 2014 IA · Metal/Non-Metal miner, prospector, nec SLIP OR FALL OF PERSON
Paul Niemann Construction Company, Inc. · Over-exertion (Not Elsewhere Classified)

EE was placing paperwork in truck that was loaded on lowboy trailer. When getting out of truck, he mis-stepped & twisted his knee. EE was able to continue to work for remainder of shift, but could not return the next morning due to swelling & pain. On 6/18/14 Dr drained fluid from knee, told EE to rest for the remainder of week & to wear knee brace until knee was completely healed.

1989 · 1 incident

March 13, 1989 IA · Metal/Non-Metal outside foreman, leadman HANDTOOLS (NONPOWERED)
Paul Niemann Construction Company, Inc. · Over-exertion in pulling or pushing objects

EMPLOYEE WAS TIGHTENING SPRINGS ON SCREENING PLANT WITH A LARGE WRENCH. WHILE TIGHTENING THE SPRINGS THE EMPLOYEE TWISTED HIS BACK WHILE PUTTING PRESSURE ON WRENCH.