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Plant #9: 115 MSHA citations Metal/Non-Metal

Controlled by Mark Schildberg
Greenfield, Adair County, IA  ·  Active
MSHA Mine ID: 1302216

Plant #9 has $21K 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
15
Years on record
1998–2021
Latest incident
Sep 2021
Compliance record
MSHA citations since 2004
115
citations
18
significant & substantial
$21,130
proposed penalties
$21,130
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Schildberg Construction Company Inc's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
67
inspections on record
1,060
inspection hours
10.9
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.
115 citations across 1,060 inspection hours.
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.
1
Section 107(a) orders
Most recent order: 2010-12-21.
On record since 2010.
Source: MSHA imminent-danger order records, updated weekly.

Plant #9 has $21K 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.
$21K
proposed penalties
$21K
current assessed
$21K
paid to date
$0
outstanding
113 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-05-19.
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.
15.9%
significant & substantial
2.7%
high negligence or reckless
15.9%
reasonably likely or greater
53.1%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 13.3% low, 84.1% moderate, 2.7% 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: 2025-01-29
26%
of limit-tested samples over the exposure limit
48
samples
38
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz3510 over
  • Respirable dust, <.1mg7
  • Nuisance dust, respirable, <1% Qtz3
  • Nuisance dust, total, <1% Qtz3
Show the individual readings (48)
Date Contaminant Concentration Limit Conc / limit Occupation
2022-02-08 Quartz, respirable, >1% Qtz 0.72 0.62 1.16 Truck Driver
2010-04-28 Quartz, respirable, >1% Qtz 0.98 0.93 1.05 Truck Driver
2010-04-28 Quartz, respirable, >1% Qtz 1.97 1.39 1.42 Crusher Oper/Worker
2010-04-28 Quartz, respirable, >1% Qtz 0.88 0.79 1.11 Truck Driver
2009-04-22 Quartz, respirable, >1% Qtz 1.2 0.64 1.88 Crusher Oper/Worker
2009-02-11 Quartz, respirable, >1% Qtz 1.16 0.91 1.27 Crusher Oper/Worker
2006-04-18 Quartz, respirable, >1% Qtz 4.22 1.79 2.36 Crusher Oper/Worker
2006-04-18 Quartz, respirable, >1% Qtz 1.42 1.37 1.04 Cleanup Man
2005-04-06 Quartz, respirable, >1% Qtz 1.3 1.15 1.13 Truck Driver
2005-04-06 Quartz, respirable, >1% Qtz 2.04 0.71 2.87 Crusher Oper/Worker
2025-01-29 Respirable dust, <.1mg 0 Truck Driver
2025-01-29 Respirable dust, <.1mg 0 Utility Man
2022-10-27 Respirable dust, <.1mg 0 Crusher Oper/Worker
2022-10-27 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2022-02-08 Quartz, respirable, >1% Qtz 0.18 Crusher Oper/Worker
2022-02-08 Quartz, respirable, >1% Qtz 0.14 Crusher Oper/Worker
2021-03-30 Quartz, respirable, >1% Qtz 0.41 0.53 0.77 Truck Driver
2021-03-30 Respirable dust, <.1mg 0 Cleanup Man
2018-12-18 Respirable dust, <.1mg 0 Truck Driver
2018-12-18 Quartz, respirable, >1% Qtz 0.2 Cleanup Man
2018-12-18 Nuisance dust, respirable, <1% Qtz 2.5 10 0.25 Crusher Oper/Worker
2017-03-21 Nuisance dust, total, <1% Qtz 3.31 10 0.33 Mechanic
2017-03-21 Nuisance dust, total, <1% Qtz 6.79 10 0.68 Crusher Oper/Worker
2017-03-21 Nuisance dust, total, <1% Qtz 3.2 10 0.32 Truck Driver
2012-12-04 Quartz, respirable, >1% Qtz 0.24 0.55 0.44 Crusher Oper/Worker
2012-12-04 Quartz, respirable, >1% Qtz 0.45 0.54 0.83 Truck Driver
2012-12-04 Quartz, respirable, >1% Qtz 0.43 0.69 0.62 Drill Operator, Rotary
2012-12-04 Quartz, respirable, >1% Qtz 0.53 0.89 0.60 Crusher Oper/Worker
2012-12-04 Quartz, respirable, >1% Qtz 0.21 0.64 0.33 Truck Driver
2011-03-02 Quartz, respirable, >1% Qtz 0.6 0.91 0.66 Cleanup Man
2011-03-02 Quartz, respirable, >1% Qtz 0.44 0.9 0.49 Truck Driver
2011-03-02 Quartz, respirable, >1% Qtz 0.64 2.84 0.23 Crusher Oper/Worker
2010-06-15 Nuisance dust, respirable, <1% Qtz 4.03 10 0.40 Crusher Oper/Worker
2010-06-15 Nuisance dust, respirable, <1% Qtz 0.33 10 0.03 Truck Driver
2010-06-15 Quartz, respirable, >1% Qtz 0.43 2.34 0.18 Truck Driver
2010-04-28 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-04-28 Quartz, respirable, >1% Qtz 0.55 0.75 0.73 Dry Screen Plant Operator
2009-06-30 Quartz, respirable, >1% Qtz 1.71 1.79 0.96 Crusher Oper/Worker
2009-02-11 Quartz, respirable, >1% Qtz 0.5 0.95 0.53 Crusher Oper/Worker
2009-02-11 Quartz, respirable, >1% Qtz 0.14 1.25 0.11 Truck Driver
2009-02-11 Quartz, respirable, >1% Qtz 0.54 0.88 0.61 Truck Driver
2006-05-09 Quartz, respirable, >1% Qtz 1.88 2.02 0.93 Crusher Oper/Worker
2006-04-18 Quartz, respirable, >1% Qtz 0.69 1.02 0.68 Truck Driver
2006-04-18 Quartz, respirable, >1% Qtz 0.44 1 0.44 Truck Driver
2005-04-06 Quartz, respirable, >1% Qtz 0.7 0.75 0.93 Truck Driver
2005-04-06 Quartz, respirable, >1% Qtz 0.3 1.17 0.26 Drill Operator, Rotary
2004-06-29 Quartz, respirable, >1% Qtz 0.22 0.94 0.23 Truck Driver
2004-06-29 Quartz, respirable, >1% Qtz 0.72 2.21 0.33 Drill Operator, Rotary Air
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.

Plant #9 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 * 0.00 0.00 0.000
2021 * 5.73 0.00 0.000
2020 * 6.98 6.98 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. Schildberg Construction Company Inc 1998 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 17
2025 16
2024 15
2023 16
2022 14
2021 15
2020 14
2019 14
2018 13
2017 14
2016 13
2015 15
2014 18
2013 17
2012 18
2011 18
2010 18
2009 17
2008 16
2007 16
2006 15
2005 14
2004 7
2002 3
2001 3
2000 3
Source: MSHA quarterly employment and production, updated weekly.

Plant #9 sits in Adair County, Iowa, where the Census mining category is 1.3% 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.
Adair County, Iowa · Population 7,471
1.3%
Mining share of county employment
$66,176
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 9,310 5 3 537.1
2026 Q1 8,881 1 0 112.6
2025 Q4 7,535 0 0 0.0
2025 Q3 11,001 0 0 0.0
2025 Q2 10,459 2 0 191.2
2025 Q1 8,094 1 0 123.5
2024 Q4 9,354 0 0 0.0
2024 Q3 9,125 1 0 109.6
Show 92 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 9,838 4 0 406.6
2024 Q1 7,919 4 1 505.1
2023 Q4 8,934 0 0 0.0
2023 Q3 10,471 0 0 0.0
2023 Q2 10,398 0 0 0.0
2023 Q1 7,020 3 0 427.4
2022 Q4 6,923 3 0 433.3
2022 Q3 8,164 0 0 0.0
2022 Q2 7,518 2 0 266.0
2022 Q1 6,452 2 0 310.0
2021 Q4 8,994 0 0 0.0
2021 Q3 10,111 0 0 0.0
2021 Q2 10,109 0 0 0.0
2021 Q1 5,707 2 0 350.4
2020 Q4 6,364 3 0 471.4
2020 Q3 7,801 0 0 0.0
2020 Q2 7,709 1 0 129.7
2020 Q1 6,789 0 0 0.0
2019 Q4 7,308 0 0 0.0
2019 Q3 9,206 0 0 0.0
2019 Q2 9,553 0 0 0.0
2019 Q1 6,437 2 0 310.7
2018 Q4 7,140 4 1 560.2
2018 Q3 7,964 0 0 0.0
2018 Q2 7,078 4 0 565.1
2018 Q1 6,616 3 0 453.4
2017 Q4 7,205 0 0 0.0
2017 Q3 8,364 0 0 0.0
2017 Q2 8,665 0 0 0.0
2017 Q1 7,467 5 0 669.6
2016 Q4 7,886 1 0 126.8
2016 Q3 7,794 0 0 0.0
2016 Q2 7,978 0 0 0.0
2016 Q1 7,127 0 0 0.0
2015 Q4 10,424 0 0 0.0
2015 Q3 9,003 0 0 0.0
2015 Q2 9,699 3 0 309.3
2015 Q1 6,588 2 0 303.6
2014 Q4 12,581 0 0 0.0
2014 Q3 10,124 0 0 0.0
2014 Q2 10,384 0 0 0.0
2014 Q1 7,380 3 1 406.5
2013 Q4 10,035 3 0 299.0
2013 Q3 10,118 3 0 296.5
2013 Q2 9,600 0 0 0.0
2013 Q1 9,772 0 0 0.0
2012 Q4 10,278 2 0 194.6
2012 Q3 9,961 0 0 0.0
2012 Q2 11,841 0 0 0.0
2012 Q1 10,261 3 0 292.4
2011 Q4 10,776 0 0 0.0
2011 Q3 10,346 0 0 0.0
2011 Q2 11,429 0 0 0.0
2011 Q1 9,837 0 0 0.0
2010 Q4 11,353 3 2 264.2
2010 Q3 11,117 0 0 0.0
2010 Q2 9,501 5 3 526.3
2010 Q1 8,458 0 0 0.0
2009 Q4 7,696 0 0 0.0
2009 Q3 9,682 0 0 0.0
2009 Q2 10,275 5 2 486.6
2009 Q1 8,366 3 1 358.6
2008 Q4 8,790 0 0 0.0
2008 Q3 9,830 0 0 0.0
2008 Q2 11,250 3 1 266.7
2008 Q1 8,546 2 0 234.0
2007 Q4 8,376 0 0 0.0
2007 Q3 10,790 0 0 0.0
2007 Q2 10,340 0 0 0.0
2007 Q1 6,774 0 0 0.0
2006 Q4 7,326 0 0 0.0
2006 Q3 9,693 0 0 0.0
2006 Q2 9,565 2 1 209.1
2006 Q1 7,202 4 0 555.4
2005 Q4 8,499 0 0 0.0
2005 Q3 9,594 0 0 0.0
2005 Q2 8,475 6 1 708.0
2005 Q1 5,262 0 0 0.0
2004 Q4 5,433 0 0 0.0
2004 Q3 4,474 0 0 0.0
2004 Q2 3,234 1 1 309.2
2002 Q3 1,297 0 0 0.0
2002 Q2 2,140 0 0 0.0
2002 Q1 1,591 0 0 0.0
2001 Q4 1,616 0 0 0.0
2001 Q3 1,782 0 0 0.0
2001 Q2 1,295 0 0 0.0
2001 Q1 1,526 0 0 0.0
2000 Q4 1,955 0 0 0.0
2000 Q3 1,904 0 0 0.0
2000 Q2 2,080 0 0 0.0
2000 Q1 1,621 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

15 on file

2021 · 1 incident

September 11, 2021 IA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Schildberg Construction Company Inc · Struck by... (Not Elsewhere Classified)

Knife slipped cutting knee. Had to have stitches in knee cap

2020 · 1 incident

July 15, 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
Schildberg Construction Company Inc · Fall down stairs

Employee was going down 3 steps from a trailer after a rain. EE's boots were muddy and EE slipped and fractured bones in left ankle.

2018 · 1 incident

August 17, 2018 IA · Metal/Non-Metal stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer OTHER
Schildberg Construction Company Inc · (Not Elsewhere Classified)

Normal work day.

2017 · 1 incident

September 20, 2017 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Schildberg Construction Company Inc · Struck by... (Not Elsewhere Classified)

Splicing a belt on conveyor when the clamp slipped and cut left hand

2014 · 2 incidents

July 8, 2014 IA · Metal/Non-Metal inspector SLIP OR FALL OF PERSON
Schildberg Construction Company Inc · Over-exertion (Not Elsewhere Classified)

This is an accident that happened on July 8, 2016 and didn't become reportable until 8/24/2016. ***Per MM this accident occurred on 7/8/2014 determined by workers comp conference***

2009 · 2 incidents

June 25, 2009 IA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Schildberg Construction Company Inc · Fall from machine

Loader operator climbing down ladder, foot slipped off bottom rung. Employee fell backwards and hit his head.

March 25, 2009 IA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Schildberg Construction Company Inc · Struck by falling object

Employee was helping to change overhead belt on the screening plant. When the clamp was released, it hit employee in the arm and cut his wrist. Employee received stitches and was released back to work no restrictions. Employee had some pain and bleeding overnight and went back to the doctor on 3/26/2009. Wound was cleaned and dressed, released back to work no restrictions.

2007 · 3 incidents

October 26, 2007 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Schildberg Construction Company Inc · Over-exertion (Not Elsewhere Classified)

Getting out of truck, twisted back wrong and has pain in back. There were discrepancies in the doctors notes, so we waited to hear back from work comp, that is why the time difference for the report.

September 21, 2007 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Schildberg Construction Company Inc · Over-exertion in lifting objects

Picking up rocks, he felt back snap. Did not report to supervisor or seek treatment until 10/1/07. Doctor reported T2 compression fracture. Will return 10/5/07 with 6 weeks restricted duty.

2006 · 2 incidents

January 31, 2006 IA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Schildberg Construction Company Inc · Caught in, under or between (Not Elsewhere Classified)

Employee was helping change hammers in the hammer mill and when they were lowering the cover, he slipped and instinctively reached out to catch himself with his left hand. His fingers were caught between the hammermill lid and liner.

January 27, 2006 IA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Schildberg Construction Company Inc · Over-exertion (Not Elsewhere Classified)

EE WAS STEPPING DOWN FROM LADDER OF PLANT (SCREEN) AND TWISTED HIS LEFT ANKLE. HE CONTINUED WORKING FOR THE REMAINDER OF THE SHIFT. AFTER GOING HOME, DUE TO PAIN & SWELLING, EE WENT TO ER AT LOCAL HOSPITAL AND FOUND HIS ANKLE WAS BROKEN.

2005 · 1 incident

October 19, 2005 IA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Schildberg Construction Company Inc · Over-exertion in lifting objects

Employee was lifting a 4" pump discharge hose. He pulled muscles in left shoulder. (Surgery required - 1/17/06)

1998 · 1 incident