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Mobile Crusher #4: 24 MSHA citations Metal/Non-Metal

Controlled by Knife River Corporation
North Bend, Coos County, OR  ·  Active
MSHA Mine ID: 3503590

Mobile Crusher #4 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
2007
Latest incident
Oct 2007
Compliance record
MSHA citations since 2004
24
citations
2
significant & substantial
$2,305
proposed penalties
$2,305
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Knife River Materials's full MSHA compliance history →
Inspection activity
MSHA inspections since 2004
33
inspections on record
393
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: 393 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Mobile Crusher #4 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
24 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2023-10-31.
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.
8.3%
significant & substantial
4.2%
high negligence or reckless
8.3%
reasonably likely or greater
83.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 33.3% low, 62.5% moderate, 4.2% 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: 2023-10-31
0%
of limit-tested samples over the exposure limit
6
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg4
  • Quartz, respirable, >1% Qtz1
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (6)
Date Contaminant Concentration Limit Conc / limit Occupation
2023-10-31 Respirable dust, <.1mg 0 Cleanup Man
2023-10-31 Respirable dust, <.1mg 0 Front-end Loader Operator
2020-12-02 Respirable dust, <.1mg 0 Front-end Loader Operator
2018-02-07 Unlisted Particulate, respirable, <1% Qtz 0.29 Crusher Oper/Worker
2009-10-28 Respirable dust, <.1mg 0 Front-end Loader Operator
2009-05-13 Quartz, respirable, >1% Qtz 0.41 0.8 0.51 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. Knife River Materials 2004 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 5
2025 3
2024 4
2023 4
2022 4
2021 4
2020 4
2019 5
2018 5
2017 5
2016 0
2015 1
2014 0
2013 1
2012 2
2011 1
2010 2
2009 1
2008 4
2007 4
2006 2
2005 1
2004 5
Source: MSHA quarterly employment and production, updated weekly.

Mobile Crusher #4 sits in Coos County, Oregon, 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.
Coos County, Oregon · Population 64,832
0.2%
Mining share of county employment
$60,313
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 1,622 0 0 0.0
2026 Q1 1,792 0 0 0.0
2025 Q4 2,023 0 0 0.0
2025 Q3 1,331 0 0 0.0
2025 Q2 1,684 0 0 0.0
2025 Q1 995 0 0 0.0
2024 Q4 1,090 0 0 0.0
2024 Q3 595 0 0 0.0
Show 77 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 1,664 0 0 0.0
2024 Q1 1,258 0 0 0.0
2023 Q4 1,587 1 0 630.1
2023 Q3 1,982 0 0 0.0
2023 Q2 2,697 0 0 0.0
2023 Q1 886 0 0 0.0
2022 Q4 1,801 0 0 0.0
2022 Q3 1,756 0 0 0.0
2022 Q2 1,912 1 0 523.0
2022 Q1 1,488 0 0 0.0
2021 Q4 1,281 0 0 0.0
2021 Q3 1,401 0 0 0.0
2021 Q2 2,788 0 0 0.0
2021 Q1 1,296 0 0 0.0
2020 Q4 1,281 0 0 0.0
2020 Q3 3,099 0 0 0.0
2020 Q2 2,156 2 0 927.6
2020 Q1 1,803 0 0 0.0
2019 Q4 2,113 0 0 0.0
2019 Q3 2,224 0 0 0.0
2019 Q2 3,088 0 0 0.0
2019 Q1 2,032 0 0 0.0
2018 Q4 1,229 0 0 0.0
2018 Q3 3,447 0 0 0.0
2018 Q2 3,447 0 0 0.0
2018 Q1 2,742 1 0 364.7
2017 Q4 1,897 0 0 0.0
2017 Q3 2,662 0 0 0.0
2017 Q2 274 0 0 0.0
2016 Q2 0 0 0
2016 Q1 0 0 0
2015 Q4 106 0 0 0.0
2015 Q3 347 0 0 0.0
2015 Q2 0 0 0
2015 Q1 0 0 0
2014 Q4 0 0 0
2014 Q3 0 0 0
2014 Q2 66 0 0 0.0
2014 Q1 0 0 0
2013 Q4 37 0 0 0.0
2013 Q3 129 0 0 0.0
2013 Q2 207 2 0 9661.8
2013 Q1 743 0 0 0.0
2012 Q4 475 0 0 0.0
2012 Q3 538 0 0 0.0
2012 Q2 494 0 0 0.0
2012 Q1 375 0 0 0.0
2011 Q4 150 3 1 20000.0
2011 Q3 413 0 0 0.0
2011 Q2 383 0 0 0.0
2011 Q1 237 0 0 0.0
2010 Q4 178 0 0 0.0
2010 Q3 473 0 0 0.0
2010 Q2 457 0 0 0.0
2010 Q1 578 0 0 0.0
2009 Q4 298 1 0 3355.7
2009 Q3 610 0 0 0.0
2009 Q2 640 1 0 1562.5
2009 Q1 8 0 0 0.0
2008 Q4 8 0 0 0.0
2008 Q3 1,594 0 0 0.0
2008 Q2 1,142 0 0 0.0
2008 Q1 368 0 0 0.0
2007 Q4 946 1 0 1057.1
2007 Q3 534 0 0 0.0
2007 Q2 1,186 0 0 0.0
2007 Q1 209 0 0 0.0
2006 Q4 1,070 3 0 2803.7
2006 Q3 1,674 0 0 0.0
2006 Q2 801 5 1 6242.2
2006 Q1 910 0 0 0.0
2005 Q4 948 0 0 0.0
2005 Q3 500 0 0 0.0
2005 Q2 480 0 0 0.0
2005 Q1 0 0 0
2004 Q4 670 3 0 4477.6
2004 Q3 7,233 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2007 · 1 incident

October 8, 2007 OR · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Knife River Materials · Fall onto or against objects

He slipped on step of loader, landed on counter weight corner tearing stomach muscles.