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Wash Plant: 40 MSHA citations Metal/Non-Metal

Controlled by Knife River Corporation
Idaho Falls, Bonneville County, ID  ·  Active
MSHA Mine ID: 1002170

Wash Plant has $6K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
1
Years on record
2019
Latest incident
Nov 2019
Compliance record
MSHA citations since 2008
40
citations
12
significant & substantial
$6,120
proposed penalties
$6,120
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Knife River Corporation Mountain West's full MSHA compliance history →
Inspection activity
MSHA inspections since 2008
27
inspections on record
291
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: 291 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Wash Plant has $6K in proposed MSHA penalties and $0 outstanding across 1 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.
$6K
proposed penalties
$6K
current assessed
$6K
paid to date
$0
outstanding
40 assessments are final orders; 1 contested dockets.
Of $314 in penalties contested before the Commission, $314 was upheld in final decisions.
As of the most recent assessment on 2025-04-14.
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.
30.0%
significant & substantial
0.0%
high negligence or reckless
30.0%
reasonably likely or greater
67.5%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 12.5% low, 87.5% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
ⓘ Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
2 citations taken to the federal commission · 5% of citations on record
  • Settled 2 · 100%
0%
S&S designation survived the contest
ⓘ Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 2 decided S&S contests · industry: 79%
0%
Penalty reduction in decided contests
$314 proposed, $314 after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2017-02-27.
Contested penalties
ⓘ A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
WEST 2017-0250 Settlement Manning 2017 $314 → $314
Source: FMSHRC civil penalty dockets and decisions (public record), 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: 2026-03-27
0%
of limit-tested samples over the exposure limit
6
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg5
  • Quartz, respirable, >1% Qtz1
Show the individual readings (6)
Date Contaminant Concentration Limit Conc / limit Occupation
2026-03-27 Respirable dust, <.1mg 0 Crusher Oper/Worker
2026-03-27 Quartz, respirable, >1% Qtz 0.13 0.29 0.45 Front-end Loader Operator
2020-10-06 Respirable dust, <.1mg 0 Washer Operator
2020-10-06 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-11-12 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-11-12 Respirable dust, <.1mg 0 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.

Wash Plant recorded 0.00 reportable injury cases per 100 full-time workers in 2023.

Injury rate, 2023
ⓘ 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 1.78 and the all-US-mining average was 2.10 cases per 100 workers.
In Idaho, metal and nonmetal mining averaged 2.16 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
2023 * 0.00 0.00 0.000
2021 * 0.00 0.00 0.000
2020 * 0.00 0.00 0.000
2019 * 6.16 6.16 0.000
2018 * 0.00 0.00 0.000
2017 * 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. Knife River 2008 to 2009
  2. Knife River Southern Idaho Division 2010 to 2023
  3. Knife River Corporation Mountain West 2023 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 2
2024 2
2023 12
2022 10
2021 12
2020 16
2019 14
2018 11
2017 9
2016 11
2015 8
2014 2
2013 2
2012 2
2011 2
2010 2
2009 2
2008 1
Source: MSHA quarterly employment and production, updated weekly.

Wash Plant sits in Bonneville County, Idaho, where the Census mining category is 0.2% 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.
Bonneville County, Idaho · Population 127,056
0.2%
Mining share of county employment
$76,646
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 1,000 0 0 0.0
2026 Q1 1,323 0 0 0.0
2025 Q4 1,280 0 0 0.0
2025 Q3 1,554 0 0 0.0
2025 Q2 976 1 0 1024.6
2025 Q1 0 0 0
2024 Q4 1,497 1 0 668.0
2024 Q3 1,113 0 0 0.0
Show 55 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 826 2 1 2421.3
2024 Q1 0 0 0
2023 Q4 3,580 0 0 0.0
2023 Q3 5,637 0 0 0.0
2023 Q2 4,775 0 0 0.0
2023 Q1 6,148 0 0 0.0
2022 Q4 5,166 0 0 0.0
2022 Q3 4,234 0 0 0.0
2022 Q2 4,540 0 0 0.0
2022 Q1 5,033 0 0 0.0
2021 Q4 4,894 0 0 0.0
2021 Q3 6,689 0 0 0.0
2021 Q2 6,790 0 0 0.0
2021 Q1 7,604 0 0 0.0
2020 Q4 7,602 1 0 131.5
2020 Q3 8,040 0 0 0.0
2020 Q2 10,048 0 0 0.0
2020 Q1 9,901 1 0 101.0
2019 Q4 7,970 0 0 0.0
2019 Q3 8,129 0 0 0.0
2019 Q2 8,946 0 0 0.0
2019 Q1 7,420 0 0 0.0
2018 Q4 5,377 2 1 372.0
2018 Q3 8,516 0 0 0.0
2018 Q2 9,124 0 0 0.0
2018 Q1 6,130 3 1 489.4
2017 Q4 7,170 0 0 0.0
2017 Q3 5,051 0 0 0.0
2017 Q2 4,981 0 0 0.0
2017 Q1 3,992 0 0 0.0
2016 Q4 5,467 4 0 731.7
2016 Q3 7,857 0 0 0.0
2016 Q2 6,849 0 0 0.0
2015 Q4 3,745 3 1 801.1
2015 Q3 7,350 0 0 0.0
2015 Q2 2,062 0 0 0.0
2014 Q4 310 0 0 0.0
2014 Q2 612 4 0 6535.9
2013 Q4 1,697 0 0 0.0
2012 Q3 2,394 1 0 417.7
2012 Q2 970 0 0 0.0
2012 Q1 593 0 0 0.0
2011 Q3 0 0 0
2011 Q2 2,317 0 0 0.0
2011 Q1 812 0 0 0.0
2010 Q4 677 0 0 0.0
2010 Q3 0 0 0
2010 Q2 577 0 0 0.0
2010 Q1 529 0 0 0.0
2009 Q4 360 0 0 0.0
2009 Q3 295 11 6 37288.1
2009 Q2 2,174 0 0 0.0
2009 Q1 573 4 2 6980.8
2008 Q4 304 0 0 0.0
2008 Q3 734 2 0 2724.8
No fatalities recorded at this mine.

Reportable incidents

1 on file

2019 · 1 incident

November 21, 2019 ID · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Knife River Southern Idaho Division · Struck by... (Not Elsewhere Classified)

Employee cut a finger using a utility knife performing maintenance.