4 Mile: 1 MSHA citation Metal/Non-Metal
MSHA record for 4 Mile (mine ID 2402835). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2026
1
citations
0
significant & substantial
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2026
1
inspections on record
22
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: 22 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections 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.0.0%
significant & substantial
0.0%
high negligence or reckless
0.0%
reasonably likely or greater
100.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 100.0% moderate, 0.0% 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: 2026-08-12
ⓘ
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.0%
of limit-tested samples over the exposure limit
4
samples
3
limit-tested
Most sampled contaminants
- Quartz, respirable, >1% Qtz3
- Respirable dust, <.1mg1
Show the individual readings (4)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2026-08-12 | Quartz, respirable, >1% Qtz | 0.26 | 0.56 | 0.46 | Stone Polisher/Cutter |
| 2026-08-12 | Quartz, respirable, >1% Qtz | 0.4 | 0.5 | 0.80 | Stone Polisher/Cutter |
| 2026-08-12 | Quartz, respirable, >1% Qtz | 0.36 | 0.78 | 0.46 | Front-end Loader Operator |
| 2026-08-12 | Respirable dust, <.1mg | 0 | Rotary Bucket Ex. 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
- Smith River Stone 2026 to present
Source: MSHA controller and operator history, updated weekly.
4 Mile sits in Flathead County, Montana, where the Census mining category is 0.7% 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.Flathead County, Montana · Population 108,445
0.7%
Mining share of county employment
$71,327
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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.