TMC Inc: 5 open mines, 10 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
TMC Inc (MSHA operator ID L13840) operates 5 open mines with 10 employees in Montana, mostly construction sand and gravel. Since January 1, 2022 MSHA inspectors issued it 10 citations and orders with $1,659 in proposed penalties, and it reported 1 injury or illness case. Data from MSHA, November 6, 2026.
The request: Watch TMC Inc (MSHA operator ID L13840): each new citation, each accident report and each new mine. $10 of work on sign-up, no card.
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- MSHA operator ID
- L13840
- Open mines
- 5
- Employees at open mines
- 10
- States
- Montana
- Citations and orders since January 1, 2022
- 10
- Significant and substantial
- 1 (10.0%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $1,659
- Amount paid so far
- $1,659
- Inspections
- 34
- Inspector hours on site
- 66
- Citations per inspection
- 0.29 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- June 24, 2026
Open mines of TMC Inc
Ranked by citations since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| TMC Crusher | TMC Inc | Gallatin County, MT | Construction sand and gravel | 4 | 8 |
| TMC Track Screen | TMC Inc | Gallatin County, MT | Construction sand and gravel | 2 | 2 |
| TMC Track Jaw | TMC Inc | Gallatin County, MT | Construction sand and gravel | 2 | 0 |
| TMC Inc. | TMC Inc | Gallatin County, MT | Construction sand and gravel | 1 | 0 |
| TW-003 | TMC Inc | Gallatin County, MT | Construction sand and gravel | 1 | 0 |
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 3 | 0 | $399 | 0 |
| 2023 | 1 | 0 | $143 | 0 |
| 2024 | 1 | 0 | $147 | 1 |
| 2025 | 5 | 1 | $970 | 0 |
Standards cited most at TMC Inc
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11003 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at TMC Inc
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
What the accident reports at TMC Inc describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 1 |
Equipment named in accident reports at TMC Inc
| Equipment | Reports |
|---|---|
| Conveyor | 1 |
Commodities
| Main commodity | Open mines |
|---|---|
| Construction sand and gravel | 5 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.