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21 Mining: 24 MSHA citations Metal/Non-Metal

21 Construction Inc · Surface
Controlled by Troy J Perry
Culbertson, Roosevelt County, MT  ·  Intermittent
MSHA Mine ID: 2402722

21 Mining has $2K 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
2026
Latest incident
Jul 2026
Compliance record
MSHA citations since 2018
24
citations
3
significant & substantial
$2,297
proposed penalties
$2,297
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See 21 Construction Inc's full MSHA compliance history →
Inspection activity
MSHA inspections since 2018
15
inspections on record
215
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: 215 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

21 Mining has $2K 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.
$2K
proposed penalties
$2K
current assessed
$2K
paid to date
$0
outstanding
16 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-10-17.
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.
12.5%
significant & substantial
16.7%
high negligence or reckless
12.5%
reasonably likely or greater
29.2%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 16.7% low, 66.7% moderate, 16.7% 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: 2026-08-06
0%
of limit-tested samples over the exposure limit
2
samples
1
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz1
  • Respirable dust, <.1mg1
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2026-08-06 Quartz, respirable, >1% Qtz 0.18 1.14 0.16 Crusher Oper/Worker
2026-08-06 Respirable dust, <.1mg 0 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. 21 Construction Inc 2018 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 4
2025 3
2024 4
2023 1
2022 1
2021 1
2020 0
2019 2
2018 3
Source: MSHA quarterly employment and production, updated weekly.

21 Mining sits in Roosevelt County, Montana, where the Census mining category is 2.9% 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.
Roosevelt County, Montana · Population 10,665
2.9%
Mining share of county employment
$53,125
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 Q2 1,817 0 0 0.0
2026 Q1 612 0 0 0.0
2025 Q4 1,238 0 0 0.0
2025 Q3 797 0 0 0.0
2025 Q2 0 0 0
2024 Q4 0 2 0
2024 Q3 2,316 0 0 0.0
2024 Q2 1,500 1 0 666.7
Show 18 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q1 133 0 0 0.0
2023 Q3 60 4 0 66666.7
2022 Q4 492 0 0 0.0
2022 Q2 777 0 0 0.0
2022 Q1 0 0 0
2021 Q3 664 0 0 0.0
2021 Q1 0 0 0
2020 Q4 0 0 0
2020 Q3 0 0 0
2020 Q2 0 0 0
2020 Q1 0 1 0
2019 Q4 1,222 0 0 0.0
2019 Q3 368 0 0 0.0
2019 Q2 1,272 0 0 0.0
2019 Q1 910 0 0 0.0
2018 Q4 1,346 7 2 5200.6
2018 Q3 1,153 0 0 0.0
2018 Q2 864 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2026 · 1 incident

July 9, 2026 MT · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
21 Construction Inc · Over-exertion (Not Elsewhere Classified)

The employee was not working on the date said injury occurred. They stated that they injured an abdominal muscle while working on some belting, doing routine maintenance. Last day of employment was July 7th.