Miner was moving a rinse bucket to access a piece of metal that needed to be repaired and welded. As EE pulled the pin from the rinse bucket somehow the hydraulic cylinder gave way pinning the miner in between the bucket and a handrail. Resulting in the death of the miner.
Spencer Gene Hopper; Lucas Hopper controller
MSHA controller ID: 0089913
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Compliance record
MSHA citations since 2010
218
citations
46
significant & substantial
$325,063
proposed penalties
$208,406
paid to date
64% of proposed penalties paid to date, a $116,657 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2010
57
inspections on record
1,025
inspection hours
21.3
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.218 citations across 1,025 inspection hours.
Source: MSHA inspections data, updated weekly.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$325K
proposed penalties
$296K
current assessed
$208K
paid to date
$88K
outstanding
197 assessments are final orders; 1 contested dockets.
As of the most recent assessment on 2026-02-11.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Top causes
- MACHINERY 1 fatality · 1 non-fatal
- POWERED HAULAGE 1 non-fatal
- STEPPING OR KNEELING ON OBJECT 1 non-fatal
Incident timeline
2025
1
2024
1
2023
1 (1f)
2019
1
Operators under this controller
Mines on record
- Bison No 1 OK
Fatalities under this controller
1 recorded
December 14, 2023
OK · Metal/Non-Metal
maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech
Fatality · MACHINERY
Bison Materials LLC · Caught in, under or between a moving and a stationary object
For insurers, brokers, and safety consultants
The full compliance file on Spencer Gene Hopper; Lucas Hopper
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.