Data / Mines / Michigan / Washtenaw County
Mines in Washtenaw County, Michigan: 12 open mines
MSHA lists 12 open mines in Washtenaw County, Michigan, run by 11 operators and employing 46 people. Since January 1, 2022 its inspectors issued 87 citations and orders there with $12,252 in proposed penalties, and operators reported 6 injury or illness cases. The operators with the most open mines are Michigan Paving and Materials Company; Mid Michigan Materials Vella Pit; Stone Material Handling LP. Data from MSHA, November 6, 2026.
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- Open mines
- 12
- Operators
- 11
- Employees
- 46
- Intermittent
- 7
- Active
- 5
- Citations and orders since January 1, 2022
- 87
- Significant and substantial
- 21 (24.1%)
- Closure orders
- 1
- High negligence or reckless
- 3
- Proposed penalties
- $12,252
- Amount paid so far
- $10,207
- Inspections
- 96
- Inspector hours on site
- 712
- Citations per inspection
- 0.91 (all mines 2.30)
- Accident reports
- 6
- Injury and illness cases
- 6
- Fatalities
- 0
- Latest MSHA record
- October 30, 2026
Operators with the most open mines in Washtenaw 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 |
|---|---|---|---|---|---|
| Michigan Paving and Materials Company | 2 | 14 | 6 | $977 | 2 |
| Mid Michigan Materials Vella Pit | 1 | 8 | 18 | $2,275 | 0 |
| Stone Material Handling LP | 1 | 3 | 17 | $3,543 | 0 |
| United Dredging | 1 | 1 | 15 | $2,100 | 1 |
| Niethammer Transport, Inc. | 1 | 3 | 11 | $1,021 | 0 |
| Gerken Materials Inc | 1 | 6 | 7 | $868 | 1 |
| American Aggregates Of Michigan Inc | 1 | 2 | 5 | $620 | 2 |
| TR Transport LLC | 1 | 2 | 4 | $284 | 0 |
| Amrize Great Lakes Inc. | 1 | 3 | 3 | $413 | 0 |
| Holly Disposal Inc | 1 | 2 | 1 | $151 | 0 |
| Cardinal Aggregates | 1 | 2 | 0 | $0 | 0 |
Operators with the most citations in Washtenaw 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 |
|---|---|---|---|---|---|
| Mid Michigan Materials Vella Pit | 1 | 8 | 18 | $2,275 | 0 |
| Stone Material Handling LP | 1 | 3 | 17 | $3,543 | 0 |
| United Dredging | 1 | 1 | 15 | $2,100 | 1 |
| Niethammer Transport, Inc. | 1 | 3 | 11 | $1,021 | 0 |
| Gerken Materials Inc | 1 | 6 | 7 | $868 | 1 |
| Michigan Paving and Materials Company | 2 | 14 | 6 | $977 | 2 |
| American Aggregates Of Michigan Inc | 1 | 2 | 5 | $620 | 2 |
| TR Transport LLC | 1 | 2 | 4 | $284 | 0 |
| Amrize Great Lakes Inc. | 1 | 3 | 3 | $413 | 0 |
| Holly Disposal Inc | 1 | 2 | 1 | $151 | 0 |
| Cardinal Aggregates | 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 |
|---|---|---|---|---|---|
| Vella Pit | Mid Michigan Materials Vella Pit | Washtenaw County, MI | Construction sand and gravel | 8 | 18 |
| SMH Portable | Stone Material Handling LP | Washtenaw County, MI | Construction sand and gravel | 3 | 17 |
| United Dredging Y106 | United Dredging | Washtenaw County, MI | Sand, common | 1 | 15 |
| Niethammer Transport | Niethammer Transport, Inc. | Washtenaw County, MI | Construction sand and gravel | 3 | 11 |
| Clinton Plant | Gerken Materials Inc | Washtenaw County, MI | Construction sand and gravel | 6 | 7 |
| Pleasant Lake Aggregates | American Aggregates Of Michigan Inc | Washtenaw County, MI | Construction sand and gravel | 2 | 5 |
| Zeeb Road | Michigan Paving and Materials Company | Washtenaw County, MI | Construction sand and gravel | 8 | 4 |
| Powerscreen | TR Transport LLC | Washtenaw County, MI | Construction sand and gravel | 2 | 4 |
| Amrize Manchester Sand and Gravel | Amrize Great Lakes Inc. | Washtenaw County, MI | Construction sand and gravel | 3 | 3 |
| Stoneco Burmeister | Michigan Paving and Materials Company | Washtenaw County, MI | Construction sand and gravel | 6 | 2 |
| Holly Pit | Holly Disposal Inc | Washtenaw County, MI | Construction sand and gravel | 2 | 1 |
| Lippman Plant #2 | Cardinal Aggregates | Washtenaw County, MI | Construction sand and gravel | 2 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 11 | 91.7% |
| Sand, common | 1 | 8.3% |
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 | 15 | 4 | $2,179 | 1 |
| 2023 | 10 | 4 | $1,454 | 0 |
| 2024 | 17 | 0 | $2,511 | 1 |
| 2025 | 12 | 2 | $1,812 | 3 |
| 2026 | 33 | 11 | $4,296 | 1 |
Standards cited most at mines in Washtenaw 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 56.14132 | Surface metal and nonmetal mines | 7 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 7 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.15014 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.16005 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12005 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 2 |
Injury and illness cases at mines in Washtenaw County, Michigan
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 4 |
| No lost time, or an occupational illness | 2 |
What the accident reports at mines in Washtenaw County, Michigan describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 3 |
| Handtools (nonpowered) | 2 |
| Exploding vessels under pressure | 1 |
Equipment named in accident reports at mines in Washtenaw County, Michigan
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 2 |
| Dredge | 1 |
| Front-end loader | 1 |
Updated November 6, 2026. Read from US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets. 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.