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: 124 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.
Violation severity profile
ⓘShares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2023
0
2022
8
2021
11
2020
4
1995
1
1994
25
1989
1
1988
13
1987
16
1986
16
1985
11
1984
7
1983
15
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.
US Antimony Critical Minerals Mill sits in Broadwater County, Montana, where the Census mining category is 2.5% 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.
Broadwater County, Montana · Population 7,310
2.5%
Mining share of county employment
$63,636
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; earlier incidents are counted but not rate-adjusted, though reported hours reach back to 1983. 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 quartersHide 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, 1995MT · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON