Mining Incidents

Jensen Pit: 40 MSHA citations Metal/Non-Metal

Tremonton, Box Elder County, UT  ·  Active
MSHA Mine ID: 4202711

Jensen Pit has $30K in proposed MSHA penalties and $2K 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
2023
Latest incident
Oct 2023
Compliance record
MSHA citations since 2020
40
citations
15
significant & substantial
$29,870
proposed penalties
$28,264
paid to date
95% of proposed penalties paid to date, a $1,606 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2020
11
inspections on record
136
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: 136 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Jensen Pit has $30K in proposed MSHA penalties and $2K 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.
$30K
proposed penalties
$30K
current assessed
$28K
paid to date
$2K
outstanding
40 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-05.
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.
37.5%
significant & substantial
20.0%
high negligence or reckless
37.5%
reasonably likely or greater
67.5%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 80.0% moderate, 20.0% 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: 2025-06-03
2
samples
0
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz2
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-06-03 Quartz, respirable, >1% Qtz 0.21 Front-end Loader Operator
2025-06-03 Quartz, respirable, >1% Qtz 0.19 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
  1. Rupp Trucking Ent Inc. 2020 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 3
2024 3
2023 2
2022 2
2021 2
2020 0
Source: MSHA quarterly employment and production, updated weekly.

Jensen Pit sits in Box Elder County, Utah, where the Census mining category is 1.1% 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.
Box Elder County, Utah · Population 59,725
1.1%
Mining share of county employment
$77,865
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 Q1 1,130 9 1 7964.6
2025 Q4 1,898 0 0 0.0
2025 Q3 1,615 0 0 0.0
2025 Q2 1,665 5 2 3003.0
2025 Q1 1,180 0 0 0.0
2024 Q4 1,559 0 0 0.0
2024 Q2 1,460 1 1 684.9
2024 Q1 814 0 0 0.0
Show 13 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 1,202 13 9 10815.3
2023 Q3 1,018 0 0 0.0
2023 Q2 0 0 0
2023 Q1 146 3 1 20547.9
2022 Q4 728 0 0 0.0
2022 Q3 486 0 0 0.0
2022 Q2 0 0 0
2022 Q1 0 0 0
2021 Q4 0 1 0
2021 Q3 582 0 0 0.0
2021 Q2 385 0 0 0.0
2021 Q1 236 0 0 0.0
2020 Q4 0 0 0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2023 · 1 incident

October 30, 2023 UT · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
Rupp Trucking Ent Inc. · Struck against a moving object

Employee was using dozer to push material down to the loader that was feeding the plant. While running parallel the ground failed under the dozer causing it to overturn landing back on tracks. Operator was found on the ground with a head injury and it is believed EE jumped out after machine rolled. There were no witnesses & the operator has a concussion and can't recall.