Data / Mines / Michigan / Stone mines
Stone mines in Michigan: 28 open mines and MSHA citations
MSHA lists 28 open stone mines in Michigan, run by 23 operators and employing 1,282 people. Since January 1, 2022 its inspectors issued 1,955 citations and orders there with $2,015,664 in proposed penalties, and operators reported 153 injury or illness cases. The operators with the most open mines are O-N Minerals (Michigan) Company; Michigan Paving and Materials Company; St. Marys Cement U.S. LLC. Data from MSHA, November 6, 2026.
SpecStream is the live web data engine for teams and agents. It reads the mine, citation, inspection and accident files that MSHA publishes, and this page is that reading. Ask for the mines of a commodity, state or operator with the operator's headquarters, website and size added from the web, and new mines, new citations and new accident reports arrive in your sheet, CRM, Slack or agent as MSHA posts them.
- Open mines
- 28
- Operators
- 23
- Employees
- 1,282
- Active
- 17
- Intermittent
- 11
- Mines run by individuals, counted and not listed
- 2
- Citations and orders since January 1, 2022
- 1,955
- Significant and substantial
- 350 (17.9%)
- Closure orders
- 11
- High negligence or reckless
- 80
- Proposed penalties
- $2,015,664
- Amount paid so far
- $1,434,834
- Inspections
- 439
- Inspector hours on site
- 9,420
- Citations per inspection
- 4.45 (all mines 2.30)
- Accident reports
- 171
- Injury and illness cases
- 153
- Fatalities
- 0
- Latest MSHA record
- October 28, 2026
Operators with the most open mines in 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 |
|---|---|---|---|---|---|
| O-N Minerals (Michigan) Company | 3 | 296 | 296 | $220,808 | 56 |
| Michigan Paving and Materials Company | 3 | 82 | 21 | $4,313 | 2 |
| St. Marys Cement U.S. LLC | 2 | 305 | 836 | $1,255,456 | 37 |
| Holcim (US) Incorporated | 1 | 264 | 489 | $385,377 | 29 |
| Amrize Great Lakes Inc. | 1 | 133 | 82 | $31,148 | 3 |
| Drummond Dolomite, Inc. | 1 | 40 | 58 | $79,534 | 13 |
| Carmeuse Lime & Stone Inc | 1 | 28 | 44 | $17,377 | 0 |
| Sylvania Minerals LLC | 1 | 49 | 13 | $2,088 | 9 |
| F G Cheney Limestone Co Inc | 1 | 9 | 12 | $1,840 | 0 |
| Napoleon Stone L.L.C. | 1 | 9 | 11 | $1,545 | 2 |
| Burroughs Materials Corp | 1 | 16 | 10 | $1,955 | 1 |
| D&L Gembel & Sons Inc | 1 | 3 | 10 | $1,649 | 0 |
| Graymont Western Lime Inc. | 1 | 24 | 10 | $1,446 | 1 |
| Shattuck Stone & Gravel LLC | 1 | 2 | 10 | $2,458 | 0 |
| Havelka Construction, LLC. | 1 | 2 | 9 | $1,480 | 0 |
| Marquette Mineral, LLC | 1 | 2 | 7 | $1,029 | 0 |
| Bacco Construction Company | 1 | 2 | 5 | $570 | 0 |
| Joseph S Lakosky LLC | 1 | 2 | 3 | $467 | 0 |
| Specification Stone Products | 1 | 3 | 2 | $298 | 0 |
| Rieth-Riley Construction Company Inc | 1 | 3 | 1 | $147 | 0 |
| Con Agg Inc | 1 | 2 | 0 | $0 | 0 |
Operators with the most citations in 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 |
|---|---|---|---|---|---|
| St. Marys Cement U.S. LLC | 2 | 305 | 836 | $1,255,456 | 37 |
| Holcim (US) Incorporated | 1 | 264 | 489 | $385,377 | 29 |
| O-N Minerals (Michigan) Company | 3 | 296 | 296 | $220,808 | 56 |
| Amrize Great Lakes Inc. | 1 | 133 | 82 | $31,148 | 3 |
| Drummond Dolomite, Inc. | 1 | 40 | 58 | $79,534 | 13 |
| Carmeuse Lime & Stone Inc | 1 | 28 | 44 | $17,377 | 0 |
| Michigan Paving and Materials Company | 3 | 82 | 21 | $4,313 | 2 |
| Sylvania Minerals LLC | 1 | 49 | 13 | $2,088 | 9 |
| F G Cheney Limestone Co Inc | 1 | 9 | 12 | $1,840 | 0 |
| Napoleon Stone L.L.C. | 1 | 9 | 11 | $1,545 | 2 |
| Burroughs Materials Corp | 1 | 16 | 10 | $1,955 | 1 |
| D&L Gembel & Sons Inc | 1 | 3 | 10 | $1,649 | 0 |
| Graymont Western Lime Inc. | 1 | 24 | 10 | $1,446 | 1 |
| Shattuck Stone & Gravel LLC | 1 | 2 | 10 | $2,458 | 0 |
| Havelka Construction, LLC. | 1 | 2 | 9 | $1,480 | 0 |
| Marquette Mineral, LLC | 1 | 2 | 7 | $1,029 | 0 |
| Bacco Construction Company | 1 | 2 | 5 | $570 | 0 |
| Joseph S Lakosky LLC | 1 | 2 | 3 | $467 | 0 |
| Specification Stone Products | 1 | 3 | 2 | $298 | 0 |
| Rieth-Riley Construction Company Inc | 1 | 3 | 1 | $147 | 0 |
| Con Agg Inc | 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 |
|---|---|---|---|---|---|
| St. Marys Cement-Charlevoix | St. Marys Cement U.S. LLC | Charlevoix County, MI | Cement | 214 | 548 |
| Amrize Alpena Plant | Holcim (US) Incorporated | Alpena County, MI | Cement | 264 | 489 |
| St Marys Cement-Detroit | St. Marys Cement U.S. LLC | Wayne County, MI | Cement | 91 | 288 |
| O-N Minerals, Calcite Operation | O-N Minerals (Michigan) Company | Presque Isle County, MI | Crushed, broken limestone | 130 | 132 |
| O-N Minerals, Cedarville Operation | O-N Minerals (Michigan) Company | Mackinac County, MI | Crushed, broken limestone | 87 | 110 |
| Amrize Presque Isle Aggregates | Amrize Great Lakes Inc. | Presque Isle County, MI | Crushed, broken limestone | 133 | 82 |
| Drummond Dolomite, Inc. | Drummond Dolomite, Inc. | Chippewa County, MI | Crushed, broken limestone | 40 | 58 |
| Carmeuse, Port Inland Operation | O-N Minerals (Michigan) Company | Schoolcraft County, MI | Crushed, broken limestone | 79 | 54 |
| River Rouge Facility | Carmeuse Lime & Stone Inc | Wayne County, MI | Lime | 28 | 44 |
| Sylvania Minerals | Sylvania Minerals LLC | Monroe County, MI | Crushed, broken limestone | 49 | 13 |
| Cheney Limestone | F G Cheney Limestone Co Inc | Eaton County, MI | Crushed, broken limestone | 9 | 12 |
| Jude Stone Quarry | Napoleon Stone L.L.C. | Jackson County, MI | Dimension sandstone | 9 | 11 |
| Port Inland Lime Kiln | Graymont Western Lime Inc. | Schoolcraft County, MI | Lime | 24 | 10 |
| Wallace Stone Plant | Burroughs Materials Corp | Huron County, MI | Crushed, broken limestone | 16 | 10 |
| Doans | D&L Gembel & Sons Inc | Delta County, MI | Crushed, broken limestone | 3 | 10 |
| Lyons Stone | Shattuck Stone & Gravel LLC | Ionia County, MI | Crushed, broken limestone | 2 | 10 |
| Ottawa Lake Quarry | Michigan Paving and Materials Company | Monroe County, MI | Crushed, broken limestone | 32 | 9 |
| Havelka Quarry | Havelka Construction, LLC. | Menominee County, MI | Crushed, broken limestone | 2 | 9 |
| Track Jaw | Marquette Mineral, LLC | Marquette County, MI | Crushed, broken granite | 2 | 7 |
| Denniston Quarry | Michigan Paving and Materials Company | Monroe County, MI | Crushed, broken limestone | 27 | 6 |
| Maybee Quarry | Michigan Paving and Materials Company | Monroe County, MI | Crushed, broken limestone | 23 | 6 |
| Crusher Spread #1 | Bacco Construction Company | Dickinson County, MI | Crushed, broken sandstone | 2 | 5 |
| Read Box Screen | Joseph S Lakosky LLC | Alger County, MI | Crushed, broken limestone | 2 | 3 |
| Long Lake Avenue Quarry | Specification Stone Products | Alpena County, MI | Crushed, broken limestone | 3 | 2 |
| 7914 Impact Plant | Rieth-Riley Construction Company Inc | Charlevoix County, MI | Crushed, broken stone | 3 | 1 |
| 390 Findlay Hydraulic Screen | Con Agg Inc | Mackinac County, MI | Crushed, broken limestone | 2 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Crushed, broken limestone | 17 | 60.7% |
| Cement | 3 | 10.7% |
| Lime | 2 | 7.1% |
| Crushed, broken stone | 2 | 7.1% |
| Dimension sandstone | 1 | 3.6% |
| Crushed, broken sandstone | 1 | 3.6% |
| Dimension limestone | 1 | 3.6% |
| Crushed, broken granite | 1 | 3.6% |
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 | 478 | 99 | $519,960 | 26 |
| 2023 | 484 | 99 | $566,477 | 26 |
| 2024 | 433 | 52 | $405,967 | 37 |
| 2025 | 274 | 46 | $171,231 | 33 |
| 2026 | 286 | 54 | $352,029 | 31 |
Standards cited most at stone mines in 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 56.20003 | Surface metal and nonmetal mines | 301 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 157 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 145 |
| 30 CFR 56.16005 | Surface metal and nonmetal mines | 67 |
| 30 CFR 56.13021 | Surface metal and nonmetal mines | 66 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 66 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 60 |
| 30 CFR 56.16006 | Surface metal and nonmetal mines | 59 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 53 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 53 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 46 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 41 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 41 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 40 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 38 |
Injury and illness cases at stone mines in Michigan
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Permanent disability | 1 |
| Days away from work or restricted activity | 103 |
| No lost time, or an occupational illness | 49 |
What the accident reports at stone mines in Michigan describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 63 |
| Slip or fall of person | 26 |
| Handtools (nonpowered) | 21 |
| Machinery | 14 |
| Powered haulage | 9 |
| Fire | 8 |
| Entrapment | 7 |
| Other | 6 |
| Stepping or kneeling on object | 5 |
| Disorders (repeated trauma) | 3 |
Equipment named in accident reports at stone mines in Michigan
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 24 |
| Ore haulage trucks - off highway trucks | 9 |
| Elevator | 8 |
| Hand tools (powered) | 5 |
| Front-end loader | 3 |
| Welding machine | 3 |
| Crusher | 3 |
| Trucks | 2 |
| Conveyor | 2 |
| Blow pipe | 2 |
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.