Mining Incidents
Search Operators Mines Alerts Research Controllers Fatalgrams About
English Español
← Back to search

Mobile Crusher #1: 43 MSHA citations Metal/Non-Metal

Controlled by Knife River Corporation
Riddle, Douglas County, OR  ·  Intermittent
MSHA Mine ID: 3502906

Mobile Crusher #1 has $5K in proposed MSHA penalties and $302 outstanding across 5 contested dockets, plus health sampling and the full incident record.

Watch this mine

Email me when a new MSHA incident is filed at Mobile Crusher #1.

Fatalities
0
Total incidents
1
Years on record
2001
Latest incident
Sep 2001
Compliance record
MSHA citations since 2001
43
citations
9
significant & substantial
$4,994
proposed penalties
$4,271
paid to date
86% of proposed penalties paid to date, a $723 gap.
Source: MSHA violations data, updated weekly.
See Knife River Materials's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
49
inspections on record
759
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: 759 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 #1 has $5K in proposed MSHA penalties and $302 outstanding across 5 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.
$5K
proposed penalties
$5K
current assessed
$4K
paid to date
$302
outstanding
41 assessments are final orders; 5 contested dockets.
Of $3K in penalties contested before the Commission, $740 was upheld in final decisions.
As of the most recent assessment on 2026-06-17.
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.
20.9%
significant & substantial
0.0%
high negligence or reckless
23.3%
reasonably likely or greater
62.8%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 30.2% low, 69.8% 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.
20 citations taken to the federal commission · 47% of citations on record
  • Settled 7 · 35%
  • Stood as issued 2 · 10%
  • Vacated or withdrawn 11 · 55%
38%
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 8 decided S&S contests · industry: 79%
73%
Penalty reduction in decided contests
$3K proposed, $740 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 2010-08-27.
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 2009-6M Vacate Zielinski 2011 $1K → $200
WEST 2009-7M Vacate Zielinski 2011 $600 → $100
WEST 2010-305M Settlement Barbour 2011 $593 → $440
WEST 2010-1748M Dismissal Barbour 2012 $200 → $0
WEST 2010-1220M Withdrawal Miller 2011 $100 → $0
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: 2026-06-17
10%
of limit-tested samples over the exposure limit
14
samples
10
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz101 over
  • Respirable dust, <.1mg3
  • Nuisance dust, respirable, <1% Qtz1
Show the individual readings (14)
Date Contaminant Concentration Limit Conc / limit Occupation
2005-06-23 Quartz, respirable, >1% Qtz 3.02 1.16 2.60 Crusher Oper/Worker
2026-06-17 Respirable dust, <.1mg 0 Truck Driver
2025-09-24 Quartz, respirable, >1% Qtz 0.19 Front-end Loader Operator
2025-09-24 Nuisance dust, respirable, <1% Qtz 0.47 10 0.05 Crusher Oper/Worker
2023-09-07 Quartz, respirable, >1% Qtz 0.35 1.03 0.34 Building Repair/Maint.
2017-10-18 Quartz, respirable, >1% Qtz 0.32 1.52 0.21 Crusher Oper/Worker
2017-10-18 Respirable dust, <.1mg 0 Front-end Loader Operator
2014-06-10 Quartz, respirable, >1% Qtz 0.41 1.62 0.25 Front-end Loader Operator
2014-06-10 Quartz, respirable, >1% Qtz 0.23 1.22 0.19 Crusher Oper/Worker
2006-04-04 Quartz, respirable, >1% Qtz 0.84 0.92 0.91 Crusher Oper/Worker
2005-08-24 Quartz, respirable, >1% Qtz 0.5 0.89 0.56 Crusher Oper/Worker
2005-06-23 Respirable dust, <.1mg 0 Front-end Loader Operator
2003-09-11 Quartz, respirable, >1% Qtz 0.23 1.07 0.21 Front-end Loader Operator
2003-09-11 Quartz, respirable, >1% Qtz 1.03 1.06 0.97 Crusher Oper/Worker

Area samples (mill and shop air)

Last sampled: 2005-08-24, 21 years ago
1
samples
Show the individual readings (1)
Date Contaminant Concentration Limit Conc / limit Area sampled
2005-08-24 Quartz, respirable, >1% Qtz 1.02 SF ORE PROCESSING
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. Charles Royers Company 1979 to 1990
  2. Bracelin-Yeager Div. of LTM Inc. 1990 to 2001
  3. Bracelin-Yeager Umpqua River Navigation 2001 to 2007
  4. Knife River Materials 2007 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 4
2025 5
2024 3
2023 3
2022 3
2021 4
2020 3
2019 3
2018 3
2017 3
2016 3
2015 2
2014 2
2013 2
2012 3
2011 3
2010 5
2009 4
2008 5
2007 3
2006 3
2005 3
2004 3
2003 4
2002 4
2001 3
2000 3
Source: MSHA quarterly employment and production, updated weekly.

Mobile Crusher #1 sits in Douglas County, Oregon, where the Census mining category is 0.4% 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.
Douglas County, Oregon · Population 111,807
0.4%
Mining share of county employment
$58,983
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 2,362 2 0 846.7
2026 Q1 0 0 0
2025 Q4 1,062 0 0 0.0
2025 Q3 3,565 0 0 0.0
2025 Q2 3,091 0 0 0.0
2025 Q1 0 0 0
2024 Q4 91 0 0 0.0
2024 Q3 1,340 0 0 0.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 1,362 0 0 0.0
2024 Q1 1,174 0 0 0.0
2023 Q4 1,107 0 0 0.0
2023 Q3 1,500 0 0 0.0
2023 Q2 716 0 0 0.0
2023 Q1 309 0 0 0.0
2022 Q4 877 1 0 1140.3
2022 Q3 1,488 0 0 0.0
2022 Q2 2,825 0 0 0.0
2022 Q1 1,070 0 0 0.0
2021 Q4 944 0 0 0.0
2021 Q3 1,527 1 0 654.9
2021 Q2 1,334 0 0 0.0
2021 Q1 1,957 0 0 0.0
2020 Q4 1,617 2 0 1236.9
2020 Q3 1,232 0 0 0.0
2020 Q2 1,349 4 0 2965.2
2020 Q1 1,718 0 0 0.0
2019 Q4 746 0 0 0.0
2019 Q3 954 0 0 0.0
2019 Q2 1,474 0 0 0.0
2019 Q1 1,010 0 0 0.0
2018 Q4 765 0 0 0.0
2018 Q3 1,246 0 0 0.0
2018 Q2 1,167 2 0 1713.8
2018 Q1 499 0 0 0.0
2017 Q4 801 0 0 0.0
2017 Q3 857 0 0 0.0
2017 Q2 333 1 0 3003.0
2017 Q1 942 2 1 2123.1
2016 Q4 445 0 0 0.0
2016 Q3 775 0 0 0.0
2016 Q2 360 0 0 0.0
2016 Q1 107 0 0 0.0
2015 Q4 116 0 0 0.0
2015 Q3 416 0 0 0.0
2015 Q2 141 0 0 0.0
2015 Q1 40 0 0 0.0
2014 Q4 244 0 0 0.0
2014 Q3 379 0 0 0.0
2014 Q2 322 0 0 0.0
2014 Q1 0 0 0
2013 Q4 316 0 0 0.0
2013 Q3 749 0 0 0.0
2013 Q2 538 1 0 1858.7
2013 Q1 25 0 0 0.0
2012 Q4 125 0 0 0.0
2012 Q3 238 1 0 4201.7
2012 Q2 545 0 0 0.0
2012 Q1 231 0 0 0.0
2011 Q4 165 0 0 0.0
2011 Q3 1,364 0 0 0.0
2011 Q2 792 0 0 0.0
2011 Q1 14 1 0 71428.6
2010 Q4 351 0 0 0.0
2010 Q3 2,159 0 0 0.0
2010 Q2 944 0 0 0.0
2010 Q1 207 0 0 0.0
2009 Q4 0 0 0
2009 Q3 912 5 1 5482.5
2009 Q2 1,042 0 0 0.0
2009 Q1 276 0 0 0.0
2008 Q4 517 0 0 0.0
2008 Q3 1,026 0 0 0.0
2008 Q2 928 4 2 4310.3
2008 Q1 311 0 0 0.0
2007 Q4 513 0 0 0.0
2007 Q3 1,376 0 0 0.0
2007 Q2 1,412 0 0 0.0
2007 Q1 1,200 0 0 0.0
2006 Q4 1,068 1 0 936.3
2006 Q3 1,250 1 0 800.0
2006 Q2 631 4 1 6339.1
2006 Q1 1,670 0 0 0.0
2005 Q4 1,017 0 0 0.0
2005 Q3 1,590 0 0 0.0
2005 Q2 1,752 3 2 1712.3
2005 Q1 579 0 0 0.0
2004 Q4 759 0 0 0.0
2004 Q3 2,349 1 0 425.7
2004 Q2 648 1 0 1543.2
2004 Q1 0 0 0
2003 Q4 261 0 0 0.0
2003 Q3 2,757 3 1 1088.1
2003 Q2 324 0 0 0.0
2003 Q1 0 0 0
2002 Q4 815 0 0 0.0
2002 Q3 1,765 0 0 0.0
2002 Q2 1,280 0 0 0.0
2002 Q1 1,386 1 1 721.5
2001 Q4 308 0 0 0.0
2001 Q3 1,584 0 0 0.0
2001 Q2 1,325 1 0 754.7
2001 Q1 1,626 0 0 0.0
2000 Q4 507 0 0 0.0
2000 Q3 1,395 0 0 0.0
2000 Q2 587 0 0 0.0
2000 Q1 1,074 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2001 · 1 incident

September 10, 2001 OR · Metal/Non-Metal coal/ore shovel operator, shoveler, power shoveler MACHINERY
Bracelin-Yeager Div. of LTM Inc. · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS TRAVELING DOWN HILL, OPERATING AN EXCAVATOR. THE DOOR ON THE CAB CAME UNLATCHED AND SWUNG CLOSED ON HIS LEFT HAND WHILE HE WAS BRACING HIMSELF AGAINST THE DOOR JAM.