Mining Incidents

Opperman Portable 1700S Metal/Non-Metal

OPPERMAN, INC. · Surface
Controlled by Jeff Opperman
Gregory, Pennington County, SD  ·  Intermittent
MSHA Mine ID: 3901648

Opperman Portable 1700S has $445 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
0
Years on record
Latest incident
Compliance record
MSHA citations since 2024
3
citations
0
significant & substantial
$445
proposed penalties
$445
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2020
9
inspections on record
81
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: 81 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Opperman Portable 1700S has $445 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.
$445
proposed penalties
$445
current assessed
$445
paid to date
$0
outstanding
3 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-25.
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 2 0 0 0.0
2025 Q3 6 0 0 0.0
2025 Q2 6 0 0 0.0
2025 Q1 1 0 0 0.0
2024 Q4 140 0 0 0.0
2024 Q3 308 0 0 0.0
2024 Q2 476 2 0 4201.7
2024 Q1 1 0 0 0.0
Show 15 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 1 0 0 0.0
2023 Q3 1 0 0 0.0
2023 Q2 1 0 0 0.0
2023 Q1 181 0 0 0.0
2022 Q4 1,156 0 0 0.0
2022 Q3 1,409 0 0 0.0
2022 Q2 1,218 0 0 0.0
2022 Q1 1,009 0 0 0.0
2021 Q4 479 0 0 0.0
2021 Q3 2,168 0 0 0.0
2021 Q2 1,667 0 0 0.0
2021 Q1 1 0 0 0.0
2020 Q4 3 0 0 0.0
2020 Q3 496 0 0 0.0
2020 Q2 34 0 0 0.0

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.

For insurers, brokers, and safety consultants

The full compliance file on Opperman Portable 1700S

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.