Superior - Twin Oaks has $66K in proposed MSHA penalties and $20K outstanding across 2 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
8
Years on record
2005–2025
Latest incident
Apr 2025
Compliance record
MSHA citations since 2002
194
citations
59
significant & substantial
$65,552
proposed penalties
$45,269
paid to date
69% of proposed penalties paid to date, a $20,283 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2002
69
inspections on record
1,066
inspection hours
18.2
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.
194 citations across 1,066 inspection hours.
Source: MSHA inspections data, updated weekly.
Superior - Twin Oaks has $66K in proposed MSHA penalties and $20K outstanding across 2 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.
$66K
proposed penalties
$66K
current assessed
$45K
paid to date
$20K
outstanding
190 assessments are final orders; 2 contested dockets.
As of the most recent assessment on 2025-06-25.
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
3,604
0
0
0.0
2025 Q3
4,976
0
0
0.0
2025 Q2
6,576
5
1
760.3
2025 Q1
6,020
1
0
166.1
2024 Q4
6,639
0
0
0.0
2024 Q3
6,209
0
0
0.0
2024 Q2
6,572
0
0
0.0
2024 Q1
6,360
0
0
0.0
Show 87 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2023 Q4
5,513
10
4
1813.9
2023 Q3
5,666
0
0
0.0
2023 Q2
6,404
2
0
312.3
2023 Q1
5,196
5
2
962.3
2022 Q4
6,224
0
0
0.0
2022 Q3
5,975
3
1
502.1
2022 Q2
7,357
0
0
0.0
2022 Q1
5,579
3
2
537.7
2021 Q4
6,660
0
0
0.0
2021 Q3
7,094
0
0
0.0
2021 Q2
6,444
2
0
310.4
2021 Q1
6,646
0
0
0.0
2020 Q4
7,673
4
1
521.3
2020 Q3
7,638
0
0
0.0
2020 Q2
5,619
3
1
533.9
2020 Q1
4,983
3
2
602.0
2019 Q4
6,817
0
0
0.0
2019 Q3
6,666
0
0
0.0
2019 Q2
7,432
1
1
134.6
2019 Q1
5,543
1
0
180.4
2018 Q4
5,926
0
0
0.0
2018 Q3
5,016
0
0
0.0
2018 Q2
7,352
2
0
272.0
2018 Q1
6,598
3
1
454.7
2017 Q4
8,746
0
0
0.0
2017 Q3
6,814
0
0
0.0
2017 Q2
7,355
4
3
543.8
2017 Q1
4,930
0
0
0.0
2016 Q4
5,026
10
2
1989.7
2016 Q3
4,635
0
0
0.0
2016 Q2
4,984
7
2
1404.5
2016 Q1
4,211
6
3
1424.8
2015 Q4
4,655
0
0
0.0
2015 Q3
5,099
6
2
1176.7
2015 Q2
4,625
0
0
0.0
2015 Q1
4,390
0
0
0.0
2014 Q4
4,231
5
3
1181.8
2014 Q3
4,728
0
0
0.0
2014 Q2
5,497
2
2
363.8
2014 Q1
4,591
1
1
217.8
2013 Q4
3,784
1
0
264.3
2013 Q3
5,579
0
0
0.0
2013 Q2
4,225
1
1
236.7
2013 Q1
4,550
0
0
0.0
2012 Q4
3,516
5
2
1422.1
2012 Q3
4,387
2
0
455.9
2012 Q2
3,700
0
0
0.0
2012 Q1
3,716
5
4
1345.5
2011 Q4
3,251
0
0
0.0
2011 Q3
3,775
2
0
529.8
2011 Q2
3,186
0
0
0.0
2011 Q1
2,209
3
0
1358.1
2010 Q4
2,891
0
0
0.0
2010 Q3
3,007
0
0
0.0
2010 Q2
2,653
6
4
2261.6
2010 Q1
2,275
0
0
0.0
2009 Q4
3,230
4
1
1238.4
2009 Q3
3,214
0
0
0.0
2009 Q2
4,162
0
0
0.0
2009 Q1
6,229
3
0
481.6
2008 Q4
4,637
6
1
1293.9
2008 Q3
4,535
0
0
0.0
2008 Q2
5,625
0
0
0.0
2008 Q1
5,225
3
0
574.2
2007 Q4
4,934
1
0
202.7
2007 Q3
6,644
0
0
0.0
2007 Q2
6,357
8
1
1258.5
2007 Q1
6,527
0
0
0.0
2006 Q4
5,531
0
0
0.0
2006 Q3
7,301
4
2
547.9
2006 Q2
6,520
0
0
0.0
2006 Q1
5,670
2
1
352.7
2005 Q4
5,589
3
0
536.8
2005 Q3
7,097
0
0
0.0
2005 Q2
5,886
11
2
1868.8
2005 Q1
5,436
0
0
0.0
2004 Q4
5,412
4
0
739.1
2004 Q3
4,723
1
0
211.7
2004 Q2
5,580
8
1
1433.7
2004 Q1
5,291
0
0
0.0
2003 Q4
5,698
8
3
1404.0
2003 Q3
4,913
0
0
0.0
2003 Q2
5,748
4
1
695.9
2003 Q1
4,627
0
0
0.0
2002 Q4
5,026
4
0
795.9
2002 Q3
4,720
1
1
211.9
2002 Q2
3,878
5
0
1289.3
No fatalities recorded at this mine.
Reportable incidents
8 on file
2025 · 1 incident
April 25, 2025CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
On 6/17/25 employee provided a modified duty work status report from their personal doctor dated 6/12/25. On 4/25/25 employee reported a first aid from pain to their right arm while placing a wear liner into position. Employee self procured medical treatment, was diagnosed with a ruptured bicep, and restricted duty is being accommodated.
2024 · 1 incident
November 21, 2024CA · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorSLIP OR FALL OF PERSON
Employee slipped and fell climbing from ladder to the cone crusher, injuring lower back.
2009 · 1 incident
August 18, 2009CA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
sprain of hip and thigh due to normal activity, repetitive application of break on loader.
2006 · 1 incident
July 20, 2006CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSLIP OR FALL OF PERSON
Employee was operating plant. A rock became lodged in a conveyor belt. Employee used a pry bar and hammer to dislodge rock. Hammer struck pry bar, pry bar struck employee's finger.
For insurers, brokers, and safety consultants
The full compliance file on Superior - Twin Oaks
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.