Mining Incidents

PORTABLE PLANT # 9 Metal/Non-Metal

STRATA CORPORATION · Surface
Controlled by Knife River Corporation
Fairview, Richland County, MT  ·  Temporarily Idled
MSHA Mine ID: 3200990

PORTABLE PLANT # 9 has $2K 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
1
Years on record
2017
Latest incident
Apr 2017
Compliance record
MSHA citations since 2017
13
citations
4
significant & substantial
$2,259
proposed penalties
$2,259
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2013
14
inspections on record
149
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: 149 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 PLANT # 9 has $2K 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.
$2K
proposed penalties
$2K
current assessed
$2K
paid to date
$0
outstanding
13 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2023-05-16.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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 Q4 0 0 0
2025 Q3 0 0 0
2025 Q2 313 0 0 0.0
2025 Q1 0 0 0
2024 Q4 647 0 0 0.0
2024 Q3 3,378 0 0 0.0
2024 Q2 3,819 0 0 0.0
2024 Q1 366 0 0 0.0
Show 45 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 2,526 0 0 0.0
2023 Q3 4,234 0 0 0.0
2023 Q2 2,631 4 2 1520.3
2023 Q1 0 0 0
2022 Q4 1,989 0 0 0.0
2022 Q3 2,695 0 0 0.0
2022 Q2 1,629 0 0 0.0
2022 Q1 0 0 0
2021 Q4 1,369 1 0 730.5
2021 Q3 2,223 0 0 0.0
2021 Q2 1,184 2 0 1689.2
2021 Q1 21 0 0 0.0
2020 Q4 246 0 0 0.0
2020 Q3 2,248 0 0 0.0
2020 Q2 1,805 0 0 0.0
2020 Q1 0 0 0
2019 Q4 200 1 0 5000.0
2019 Q3 585 0 0 0.0
2019 Q2 0 0 0
2019 Q1 0 0 0
2018 Q4 961 0 0 0.0
2018 Q3 983 0 0 0.0
2018 Q2 2,229 3 1 1345.9
2018 Q1 0 0 0
2017 Q4 1,961 0 0 0.0
2017 Q3 3,789 0 0 0.0
2017 Q2 2,103 2 1 951.0
2017 Q1 0 0 0
2016 Q4 487 0 0 0.0
2016 Q3 1,441 0 0 0.0
2016 Q1 0 0 0
2015 Q4 0 0 0
2015 Q3 0 0 0
2015 Q2 0 0 0
2015 Q1 480 0 0 0.0
2014 Q4 560 0 0 0.0
2014 Q3 560 0 0 0.0
2014 Q2 520 0 0 0.0
2014 Q1 480 0 0 0.0
2013 Q4 560 0 0 0.0
2013 Q3 0 0 0
2013 Q2 0 0 0
2013 Q1 0 0 0
2012 Q4 0 0 0
2012 Q3 791 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2017 · 1 incident

April 14, 2017 MT · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
STRATA CORPORATION · Over-exertion (Not Elsewhere Classified)

Employee slipped on a hill and strained left calf muscle.

For insurers, brokers, and safety consultants

The full compliance file on PORTABLE PLANT # 9

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.