Strata Corp · Caught in, under or between running or meshing objects
Employee had EE's arm amputated between EE's elbow and wrist.
Portable Plant #6: 40 MSHA citations Metal/Non-Metal
Portable Plant #6 has $19K in proposed MSHA penalties and $0 outstanding across 3 contested dockets, plus health sampling and the full incident record.
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Email me when a new MSHA incident is filed at Portable Plant #6.
- Fatalities
- 0
- Total incidents
- 4
- Years on record
- 2000–2022
- Latest incident
- Jul 2022
Compliance record
MSHA citations since 2000
40
citations
7
significant & substantial
$18,869
proposed penalties
$16,356
paid to date
87% of proposed penalties paid to date, a $2,513 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
29
inspections on record
409
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: 409 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 #6 has $19K in proposed MSHA penalties and $0 outstanding across 3 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.$19K
proposed penalties
$16K
current assessed
$16K
paid to date
$0
outstanding
39 assessments are final orders; 3 contested dockets.
Of $13K in penalties contested before the Commission, $11K was upheld in final decisions.
As of the most recent assessment on 2025-06-02.
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.17.9%
significant & substantial
15.4%
high negligence or reckless
17.9%
reasonably likely or greater
76.9%
permanently disabling or fatal if injury occurs
Negligence coding: 2.6% none, 2.6% low, 79.5% moderate, 15.4% 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.
5
citations taken to the federal commission · 13% of citations on record
- Settled 3 · 60%
- Stood as issued 2 · 40%
100%
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 4 decided S&S contests · industry: 79%
10%
Penalty reduction in decided contests
$10K proposed, $9K 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 2024-06-12.
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 |
|---|---|---|---|---|
| CENT 2023-0116 | Settlement | Paez | 2023 | $10K → $9K |
| CENT20020035M | Settlement | Bulluck | 2002 | $3K → $2K |
| CENT 2024-0241 | Default | 2024 | $368 → $368 |
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: 2025-06-03
ⓘ
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.100%
of limit-tested samples over the exposure limit
10
samples
1
limit-tested
Most sampled contaminants
- Quartz, respirable, >1% Qtz31 over
- Respirable dust, <.1mg6
- Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (10)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2021-10-26 | Quartz, respirable, >1% Qtz | 0.32 | 0.27 | 1.19 | Crusher Oper/Worker |
| 2025-06-03 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2025-06-03 | Respirable dust, <.1mg | 0 | Bulldozer Operator | ||
| 2025-06-03 | Respirable dust, <.1mg | 0 | Crusher Oper/Worker | ||
| 2021-10-26 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2021-10-26 | Unlisted Particulate, respirable, <1% Qtz | 0.15 | Scraper Operator | ||
| 2019-09-24 | Quartz, respirable, >1% Qtz | 0.28 | Supervisor, Co. Official | ||
| 2019-09-24 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2019-09-24 | Quartz, respirable, >1% Qtz | 0.19 | Bulldozer Operator | ||
| 2019-09-24 | Respirable dust, <.1mg | 0 | Front-end Loader Operator |
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
- Strata Corp 1950 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2026 | 4 |
| 2025 | 5 |
| 2024 | 3 |
| 2023 | 3 |
| 2022 | 4 |
| 2021 | 4 |
| 2020 | 4 |
| 2019 | 4 |
| 2018 | 4 |
| 2017 | 5 |
| 2016 | 4 |
| 2015 | 6 |
| 2014 | 2 |
| 2013 | 3 |
| 2012 | 6 |
| 2001 | 0 |
| 2000 | 8 |
Source: MSHA quarterly employment and production, updated weekly.
Portable Plant #6 sits in Grand Forks County, North Dakota, where the Census mining category is 0.3% 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.Grand Forks County, North Dakota · Population 72,764
0.3%
Mining share of county employment
$68,450
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 | 4,634 | 0 | 0 | 0.0 |
| 2026 Q1 | 0 | 0 | 0 | |
| 2025 Q4 | 1 | 0 | 0 | 0.0 |
| 2025 Q3 | 5,440 | 0 | 0 | 0.0 |
| 2025 Q2 | 2,126 | 1 | 0 | 470.4 |
| 2025 Q1 | 0 | 0 | 0 | |
| 2024 Q4 | 1,920 | 0 | 0 | 0.0 |
| 2024 Q3 | 3,982 | 0 | 0 | 0.0 |
Show 53 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 3,885 | 2 | 1 | 514.8 |
| 2024 Q1 | 592 | 0 | 0 | 0.0 |
| 2023 Q4 | 1,370 | 0 | 0 | 0.0 |
| 2023 Q3 | 3,704 | 0 | 0 | 0.0 |
| 2023 Q2 | 3,423 | 0 | 0 | 0.0 |
| 2023 Q1 | 0 | 0 | 0 | |
| 2022 Q4 | 2,439 | 0 | 0 | 0.0 |
| 2022 Q3 | 3,502 | 6 | 3 | 1713.3 |
| 2022 Q2 | 3,597 | 0 | 0 | 0.0 |
| 2022 Q1 | 0 | 0 | 0 | |
| 2021 Q4 | 1,984 | 2 | 0 | 1008.1 |
| 2021 Q3 | 4,544 | 7 | 2 | 1540.5 |
| 2021 Q2 | 576 | 0 | 0 | 0.0 |
| 2021 Q1 | 0 | 0 | 0 | |
| 2020 Q4 | 1,301 | 0 | 0 | 0.0 |
| 2020 Q3 | 3,164 | 9 | 0 | 2844.5 |
| 2020 Q2 | 3,134 | 0 | 0 | 0.0 |
| 2020 Q1 | 0 | 0 | 0 | |
| 2019 Q4 | 3,727 | 0 | 0 | 0.0 |
| 2019 Q3 | 3,485 | 3 | 0 | 860.8 |
| 2019 Q2 | 3,279 | 0 | 0 | 0.0 |
| 2019 Q1 | 0 | 0 | 0 | |
| 2018 Q4 | 2,222 | 0 | 0 | 0.0 |
| 2018 Q3 | 2,903 | 0 | 0 | 0.0 |
| 2018 Q2 | 3,209 | 2 | 0 | 623.2 |
| 2018 Q1 | 0 | 0 | 0 | |
| 2017 Q4 | 3,218 | 0 | 0 | 0.0 |
| 2017 Q3 | 3,503 | 0 | 0 | 0.0 |
| 2017 Q2 | 2,158 | 2 | 0 | 926.8 |
| 2017 Q1 | 866 | 0 | 0 | 0.0 |
| 2016 Q4 | 853 | 0 | 0 | 0.0 |
| 2016 Q3 | 3,697 | 1 | 0 | 270.5 |
| 2016 Q2 | 2,776 | 0 | 0 | 0.0 |
| 2016 Q1 | 1,414 | 0 | 0 | 0.0 |
| 2015 Q4 | 3,545 | 0 | 0 | 0.0 |
| 2015 Q3 | 3,668 | 0 | 0 | 0.0 |
| 2015 Q2 | 2,831 | 1 | 0 | 353.2 |
| 2015 Q1 | 926 | 0 | 0 | 0.0 |
| 2014 Q4 | 1,368 | 0 | 0 | 0.0 |
| 2014 Q3 | 1,626 | 0 | 0 | 0.0 |
| 2014 Q2 | 1,368 | 0 | 0 | 0.0 |
| 2014 Q1 | 890 | 2 | 0 | 2247.2 |
| 2013 Q4 | 3,323 | 0 | 0 | 0.0 |
| 2013 Q3 | 3,271 | 0 | 0 | 0.0 |
| 2013 Q2 | 3,012 | 0 | 0 | 0.0 |
| 2013 Q1 | 0 | 0 | 0 | |
| 2012 Q4 | 4,647 | 0 | 0 | 0.0 |
| 2012 Q3 | 2,589 | 0 | 0 | 0.0 |
| 2001 Q1 | 0 | 0 | 0 | |
| 2000 Q4 | 4,195 | 1 | 1 | 238.4 |
| 2000 Q3 | 5,534 | 0 | 0 | 0.0 |
| 2000 Q2 | 5,054 | 1 | 0 | 197.9 |
| 2000 Q1 | 905 | 0 | 0 | 0.0 |
No fatalities recorded at this mine.
Reportable incidents
4 on file2022 · 1 incident
2019 · 1 incident
May 8, 2019
ND · Metal/Non-Metal
crusher attendant/operator, pan feeder operator/worker
SLIP OR FALL OF PERSON
Strata Corp · Fall from machine
Employee was preforming maintenance tasks on the cone while plant was shut down when ee lost footing on the cone discharge. EE fell from approximately 4 feet high onto shoulder. EE has had shoulder problems in the past and it does become easily dislocated. EE shoulder was in fact dislocated and ee was taken to Medical Center for treatment.
2000 · 2 incidents
Strata Corp · Fall from scaffolds, walkways, platforms
ON A LADDER INSTALLING BOLTS ON A CATWALK. CATWALK WAS BEING FABRICATED FOR A NEW CRUSHER LADDER WAS NOT STABLE, AND EE FELL, INJURING SIDE.
Strata Corp · Caught in, under or between (Not Elsewhere Classified)
MOVING A TABLE IN THE SHOP. PINCHED SMALL FINGER BETWEEN TABLE AND PIECE OF IRON, STITCHES REQUIRED.