Mining Incidents

US Antimony Critical Minerals Mill Metal/Non-Metal

US Antimony Corp. · Facility
Controlled by State Street Corporation
Radersburg, Broadwater County, MT  ·  Abandoned
MSHA Mine ID: 2401650

US Antimony Critical Minerals Mill has $951 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
1
Years on record
1995
Latest incident
Feb 1995
Compliance record
MSHA citations since 2009
8
citations
0
significant & substantial
$951
proposed penalties
$951
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2008
9
inspections on record
110
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: 110 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

US Antimony Critical Minerals Mill has $951 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.
$951
proposed penalties
$951
current assessed
$951
paid to date
$0
outstanding
8 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-09-26.
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
2023 Q4 0 0 0
2023 Q3 0 0 0
2022 Q2 2,582 0 0 0.0
2022 Q1 3,776 0 0 0.0
2021 Q4 3,159 2 0 633.1
2021 Q3 5,943 2 0 336.5
2021 Q2 5,918 0 0 0.0
2021 Q1 4,958 0 0 0.0
Show 2 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2020 Q4 739 0 0 0.0
2020 Q3 1,171 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

1995 · 1 incident

February 27, 1995 MT · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Mill Management L C · Fall down stairs

TRIPPED COMING DOWNSTAIRS. HE HIT HIS HEAD AND SHOULDERS.

For insurers, brokers, and safety consultants

The full compliance file on US Antimony Critical Minerals Mill

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.