Mining Incidents

Portable Crusher: 81 MSHA citations Metal/Non-Metal

JJ's Company Excavating LLC · Surface
Controlled by John R. Kamphake
Parkers Prairie, Otter Tail County, MN  ·  Intermittent
MSHA Mine ID: 2103397

Portable Crusher has $14K 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
0
Years on record
Latest incident
Compliance record
MSHA citations since 2004
81
citations
15
significant & substantial
$14,440
proposed penalties
$14,440
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2004
31
inspections on record
286
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: 286 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 Crusher has $14K 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.
$14K
proposed penalties
$14K
current assessed
$14K
paid to date
$0
outstanding
81 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-06-24.
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.
18.5%
significant & substantial
4.9%
high negligence or reckless
18.5%
reasonably likely or greater
51.9%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 18.5% low, 76.5% moderate, 4.9% 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: 2004-06-30, 22 years ago
0%
of limit-tested samples over the exposure limit
2
samples
2
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz2
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2004-06-30 Quartz, respirable, >1% Qtz 0.69 1.15 0.60 Front-end Loader Operator
2004-06-30 Quartz, respirable, >1% Qtz 0.24 0.83 0.29 Crusher Oper/Worker
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. JJ's Company Excavating LLC 2003 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 1
2025 2
2024 2
2023 2
2022 2
2021 2
2020 1
2019 2
2018 2
2017 2
2016 2
2015 4
2014 2
2013 3
2012 2
2011 1
2006 0
2005 2
2004 2
2003 2
Source: MSHA quarterly employment and production, updated weekly.

Portable Crusher sits in Otter Tail 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.
Otter Tail County, Minnesota · Population 60,281
0.1%
Mining share of county employment
$70,912
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 129 0 0 0.0
2026 Q1 0 0 0
2025 Q4 56 0 0 0.0
2025 Q3 227 0 0 0.0
2025 Q2 65 1 0 15384.6
2025 Q1 0 0 0
2024 Q4 46 0 0 0.0
2024 Q3 140 3 0 21428.6
Show 62 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 71 0 0 0.0
2024 Q1 0 0 0
2023 Q4 167 0 0 0.0
2023 Q3 215 9 0 41860.5
2023 Q2 224 0 0 0.0
2023 Q1 0 0 0
2022 Q4 129 0 0 0.0
2022 Q3 398 3 2 7537.7
2022 Q2 255 0 0 0.0
2022 Q1 0 0 0
2021 Q4 211 0 0 0.0
2021 Q3 309 4 1 12945.0
2021 Q2 279 0 0 0.0
2021 Q1 0 0 0
2020 Q4 58 0 0 0.0
2020 Q3 295 0 0 0.0
2020 Q2 257 2 0 7782.1
2020 Q1 0 0 0
2019 Q4 221 0 0 0.0
2019 Q3 253 0 0 0.0
2019 Q2 184 2 0 10869.6
2019 Q1 0 0 0
2018 Q4 46 0 0 0.0
2018 Q3 514 9 2 17509.7
2018 Q2 176 0 0 0.0
2018 Q1 0 0 0
2017 Q4 150 0 0 0.0
2017 Q3 266 0 0 0.0
2017 Q2 186 0 0 0.0
2017 Q1 0 0 0
2016 Q4 309 4 0 12945.0
2016 Q3 239 0 0 0.0
2016 Q2 239 7 2 29288.7
2016 Q1 0 0 0
2015 Q4 118 2 0 16949.2
2015 Q3 588 8 0 13605.4
2015 Q2 378 0 0 0.0
2015 Q1 28 2 0 71428.6
2014 Q4 77 0 0 0.0
2014 Q3 359 0 0 0.0
2014 Q2 303 0 0 0.0
2014 Q1 0 0 0
2013 Q4 123 0 0 0.0
2013 Q3 439 0 0 0.0
2013 Q2 130 0 0 0.0
2013 Q1 0 0 0
2012 Q4 3 0 0 0.0
2012 Q3 428 15 7 35046.7
2012 Q2 105 0 0 0.0
2012 Q1 0 1 0
2011 Q4 0 0 0
2011 Q3 440 1 1 2272.7
2011 Q2 46 0 0 0.0
2006 Q2 0 0 0
2006 Q1 0 0 0
2005 Q4 56 0 0 0.0
2005 Q2 829 0 0 0.0
2005 Q1 0 0 0
2004 Q4 0 2 0
2004 Q3 607 0 0 0.0
2004 Q2 571 6 0 10507.9
2003 Q4 477 0 0 0.0

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.