Data / Mines / Michigan / Tuscola County
Mines in Tuscola County, Michigan: 10 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 10 open mines in Tuscola County, Michigan, run by 9 operators and employing 23 people. Since January 1, 2022 its inspectors issued 127 citations and orders there with $21,904 in proposed penalties, and operators reported 1 injury or illness case. The operators with the most open mines are Thumb Aggregate Sales LLC; Tca Management, LLC; Mikinaak Sand and Gravel LLC. Data from MSHA, November 6, 2026.
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- Open mines
- 10
- Operators
- 9
- Employees
- 23
- Intermittent
- 9
- Active
- 1
- Citations and orders since January 1, 2022
- 127
- Significant and substantial
- 39 (30.7%)
- Closure orders
- 1
- High negligence or reckless
- 2
- Proposed penalties
- $21,904
- Amount paid so far
- $21,149
- Inspections
- 57
- Inspector hours on site
- 466
- Citations per inspection
- 2.23 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- October 22, 2026
Operators with the most open mines in Tuscola County, Michigan
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Thumb Aggregate Sales LLC | 2 | 4 | 29 | $6,485 | 1 |
| Tca Management, LLC | 1 | 3 | 30 | $4,621 | 0 |
| Mikinaak Sand and Gravel LLC | 1 | 2 | 23 | $4,561 | 0 |
| Eggers Excavating, LLC | 1 | 3 | 17 | $2,493 | 0 |
| Kig Enterprises LLC | 1 | 4 | 11 | $1,491 | 0 |
| R & R Concrete and Supply LLC | 1 | 1 | 9 | $864 | 0 |
| G. Borek Excavating LLC | 1 | 2 | 4 | $570 | 0 |
| Thom Farms Inc | 1 | 2 | 4 | $819 | 0 |
| Legacy Sand And Gravel LLC | 1 | 2 | 0 | $0 | 0 |
Operators with the most citations in Tuscola County, Michigan
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Tca Management, LLC | 1 | 3 | 30 | $4,621 | 0 |
| Thumb Aggregate Sales LLC | 2 | 4 | 29 | $6,485 | 1 |
| Mikinaak Sand and Gravel LLC | 1 | 2 | 23 | $4,561 | 0 |
| Eggers Excavating, LLC | 1 | 3 | 17 | $2,493 | 0 |
| Kig Enterprises LLC | 1 | 4 | 11 | $1,491 | 0 |
| R & R Concrete and Supply LLC | 1 | 1 | 9 | $864 | 0 |
| G. Borek Excavating LLC | 1 | 2 | 4 | $570 | 0 |
| Thom Farms Inc | 1 | 2 | 4 | $819 | 0 |
| Legacy Sand And Gravel LLC | 1 | 2 | 0 | $0 | 0 |
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Tca Pit | Tca Management, LLC | Tuscola County, MI | Construction sand and gravel | 3 | 30 |
| Superior Plant | Thumb Aggregate Sales LLC | Tuscola County, MI | Construction sand and gravel | 2 | 27 |
| Mikinaak Sand and Gravel | Mikinaak Sand and Gravel LLC | Tuscola County, MI | Construction sand and gravel | 2 | 23 |
| Vassar Pit | Eggers Excavating, LLC | Tuscola County, MI | Construction sand and gravel | 3 | 17 |
| Wells Road Pit | Kig Enterprises LLC | Tuscola County, MI | Construction sand and gravel | 4 | 11 |
| Tuckey | R & R Concrete and Supply LLC | Tuscola County, MI | Construction sand and gravel | 1 | 9 |
| Snover Road Pit | G. Borek Excavating LLC | Tuscola County, MI | Construction sand and gravel | 2 | 4 |
| Karlstone | Thom Farms Inc | Tuscola County, MI | Construction sand and gravel | 2 | 4 |
| Superior 3 | Thumb Aggregate Sales LLC | Tuscola County, MI | Construction sand and gravel | 2 | 2 |
| Lobdell Mid Thumb Materials | Legacy Sand And Gravel LLC | Tuscola County, MI | Construction sand and gravel | 2 | 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 | 33 | 13 | $8,334 | 0 |
| 2023 | 11 | 2 | $2,138 | 1 |
| 2024 | 46 | 9 | $7,073 | 0 |
| 2025 | 16 | 5 | $2,936 | 0 |
| 2026 | 21 | 10 | $1,423 | 0 |
Standards cited most at mines in Tuscola County, Michigan
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 56.9300 | Surface metal and nonmetal mines | 16 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 12 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 11 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 2 |
Injury and illness cases at mines in Tuscola County, Michigan
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 mines in Tuscola County, Michigan describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 1 |
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.