Mining Incidents

Kolman Screening Plant: 25 MSHA citations Metal/Non-Metal

CRC Sand & Gravel LLC · Surface
Controlled by Cullen E DeRuyter
Ruthton, Pipestone County, MN  ·  Intermittent
MSHA Mine ID: 2103465

Kolman Screening Plant has $3K in proposed MSHA penalties and $2K outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2004
25
citations
2
significant & substantial
$3,462
proposed penalties
$1,438
paid to date
42% of proposed penalties paid to date, a $2,024 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2004
26
inspections on record
192
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: 192 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Kolman Screening Plant has $3K in proposed MSHA penalties and $2K 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.
$3K
proposed penalties
$3K
current assessed
$1K
paid to date
$2K
outstanding
19 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-06-22.
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.
8.0%
significant & substantial
12.0%
high negligence or reckless
8.0%
reasonably likely or greater
24.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 20.0% low, 68.0% moderate, 12.0% 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: 2021-06-30, 5 years ago
2
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg2
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2021-06-30 Respirable dust, <.1mg 0 Dry Screen Plant Operator
2009-04-28 Respirable dust, <.1mg 0 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.
Ownership history
  1. Robert Rupp Construction 2004 to 2020
  2. CRC Sand & Gravel LLC 2020 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2025 3
2024 1
2023 1
2022 2
2021 2
2020 2
2019 2
2018 3
2017 2
2016 2
2015 2
2014 2
2013 3
2012 3
2011 2
2010 2
2009 3
2008 1
2007 2
2006 2
2005 1
2004 3
Source: MSHA quarterly employment and production, updated weekly.

Kolman Screening Plant sits in Pipestone County, Minnesota, where the Census mining category is 0.1% 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.
Pipestone County, Minnesota · Population 9,352
0.1%
Mining share of county employment
$66,073
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
2025 Q3 655 0 0 0.0
2025 Q2 806 1 1 1240.7
2024 Q4 85 0 0 0.0
2024 Q3 802 0 0 0.0
2024 Q1 0 1 0
2023 Q4 85 0 0 0.0
2023 Q3 600 0 0 0.0
2023 Q2 650 0 0 0.0
Show 72 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q1 0 0 0
2022 Q2 475 0 0 0.0
2022 Q1 0 0 0
2021 Q3 830 0 0 0.0
2021 Q2 360 1 0 2777.8
2021 Q1 0 0 0
2020 Q4 0 0 0
2020 Q3 975 0 0 0.0
2020 Q2 610 1 0 1639.3
2020 Q1 1 0 0 0.0
2019 Q4 150 0 0 0.0
2019 Q3 444 0 0 0.0
2019 Q2 120 0 0 0.0
2019 Q1 2 0 0 0.0
2018 Q4 204 0 0 0.0
2018 Q3 430 2 1 4651.2
2018 Q2 250 0 0 0.0
2018 Q1 1 0 0 0.0
2017 Q4 220 0 0 0.0
2017 Q3 420 1 0 2381.0
2017 Q2 280 0 0 0.0
2017 Q1 1 0 0 0.0
2016 Q4 300 0 0 0.0
2016 Q3 645 0 0 0.0
2016 Q2 290 0 0 0.0
2016 Q1 1 0 0 0.0
2015 Q4 165 0 0 0.0
2015 Q3 370 0 0 0.0
2015 Q2 460 0 0 0.0
2015 Q1 1 0 0 0.0
2014 Q4 215 0 0 0.0
2014 Q3 768 0 0 0.0
2014 Q2 273 2 0 7326.0
2014 Q1 1 0 0 0.0
2013 Q4 540 1 0 1851.9
2013 Q3 640 0 0 0.0
2013 Q2 325 0 0 0.0
2013 Q1 1 0 0 0.0
2012 Q4 390 0 0 0.0
2012 Q3 520 0 0 0.0
2012 Q2 804 1 0 1243.8
2012 Q1 1 0 0 0.0
2011 Q4 530 0 0 0.0
2011 Q3 675 0 0 0.0
2011 Q2 377 0 0 0.0
2011 Q1 1 0 0 0.0
2010 Q4 240 0 0 0.0
2010 Q3 575 0 0 0.0
2010 Q2 546 0 0 0.0
2010 Q1 1 0 0 0.0
2009 Q4 195 0 0 0.0
2009 Q3 720 0 0 0.0
2009 Q2 711 1 0 1406.5
2009 Q1 1 0 0 0.0
2008 Q4 170 0 0 0.0
2008 Q3 594 0 0 0.0
2008 Q2 665 0 0 0.0
2008 Q1 1 0 0 0.0
2007 Q4 175 0 0 0.0
2007 Q3 810 0 0 0.0
2007 Q2 540 1 0 1851.9
2007 Q1 1 0 0 0.0
2006 Q4 240 0 0 0.0
2006 Q3 520 0 0 0.0
2006 Q2 636 0 0 0.0
2006 Q1 0 0 0
2005 Q4 400 0 0 0.0
2005 Q3 690 0 0 0.0
2005 Q2 546 0 0 0.0
2005 Q1 0 0 0
2004 Q4 300 0 0 0.0
2004 Q3 410 2 0 4878.0

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.