Mining Incidents

Tomichi No 1: 30 MSHA citations Metal/Non-Metal

Tomichi Materials LLC · Surface
Gunnison, Gunnison County, CO  ·  Intermittent
MSHA Mine ID: 0505049

Tomichi No 1 has $5K in proposed MSHA penalties and $30 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2016
30
citations
14
significant & substantial
$4,514
proposed penalties
$4,484
paid to date
99% of proposed penalties paid to date, a $30 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2016
18
inspections on record
230
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: 230 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
1
Section 107(a) orders
Most recent order: 2016-12-06.
On record since 2016.
Source: MSHA imminent-danger order records, updated weekly.

Tomichi No 1 has $5K in proposed MSHA penalties and $30 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.
$5K
proposed penalties
$5K
current assessed
$4K
paid to date
$30
outstanding
28 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-23.
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.
48.3%
significant & substantial
0.0%
high negligence or reckless
48.3%
reasonably likely or greater
55.2%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 13.8% low, 86.2% 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: 2023-09-19
8
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg7
  • Quartz, respirable, >1% Qtz1
Show the individual readings (8)
Date Contaminant Concentration Limit Conc / limit Occupation
2023-09-19 Respirable dust, <.1mg 0 Washer Operator
2023-09-19 Quartz, respirable, >1% Qtz 0.18 Front-end Loader Operator
2023-09-19 Respirable dust, <.1mg 0 Front-end Loader Operator
2023-09-19 Respirable dust, <.1mg 0 Truck Driver
2019-06-05 Respirable dust, <.1mg 0 Truck Driver
2019-06-05 Respirable dust, <.1mg 0 Backhoe Operator
2019-06-05 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-06-05 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. Tomichi Materials LLC 2015 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 7
2025 4
2024 5
2023 6
2022 6
2021 7
2020 7
2019 6
2018 5
2017 6
2016 8
Source: MSHA quarterly employment and production, updated weekly.

Tomichi No 1 sits in Gunnison County, Colorado, where the Census mining category is 0.3% 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.
Gunnison County, Colorado · Population 17,158
0.3%
Mining share of county employment
$77,358
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 2,855 0 0 0.0
2026 Q1 2,301 1 0 434.6
2025 Q4 2,000 0 0 0.0
2025 Q3 2,160 0 0 0.0
2025 Q2 2,188 0 0 0.0
2025 Q1 960 1 0 1041.7
2024 Q4 2,280 0 0 0.0
2024 Q3 2,900 1 0 344.8
Show 30 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 2,140 0 0 0.0
2024 Q1 1,440 0 0 0.0
2023 Q4 1,920 0 0 0.0
2023 Q3 3,620 5 3 1381.2
2023 Q2 3,640 0 0 0.0
2023 Q1 1,440 0 0 0.0
2022 Q4 3,040 0 0 0.0
2022 Q3 3,930 0 0 0.0
2022 Q2 3,867 2 2 517.2
2022 Q1 815 0 0 0.0
2021 Q4 3,170 0 0 0.0
2021 Q3 2,173 1 0 460.2
2021 Q2 1,045 0 0 0.0
2020 Q4 1,109 0 0 0.0
2020 Q3 2,406 0 0 0.0
2020 Q2 1,875 0 0 0.0
2019 Q4 1,371 3 2 2188.2
2019 Q3 2,281 0 0 0.0
2019 Q2 1,485 2 0 1346.8
2018 Q4 1,342 0 0 0.0
2018 Q3 2,149 0 0 0.0
2018 Q2 1,746 0 0 0.0
2018 Q1 515 0 0 0.0
2017 Q4 1,699 6 2 3531.5
2017 Q3 2,549 0 0 0.0
2017 Q2 2,771 0 0 0.0
2017 Q1 46 0 0 0.0
2016 Q4 1,789 6 4 3353.8
2016 Q3 4,861 1 0 205.7
2016 Q2 1,885 0 0 0.0

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.