Data / Mines / Michigan / Kalamazoo County
Mines in Kalamazoo County, Michigan: 11 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 11 open mines in Kalamazoo County, Michigan, run by 5 operators and employing 56 people. Since January 1, 2022 its inspectors issued 110 citations and orders there with $17,869 in proposed penalties, and operators reported 13 injury or illness cases. The operators with the most open mines are Aggregate Resources Inc; Top Grade Aggregates, LLC; Byholt Inc. Data from MSHA, November 6, 2026.
The request: Get every open mine in Kalamazoo County, Michigan from MSHA with its operator, employees, and the operator's website, headquarters and size. $10 of work on sign-up, no card.
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
- 11
- Operators
- 5
- Employees
- 56
- Active
- 6
- Intermittent
- 5
- Citations and orders since January 1, 2022
- 110
- Significant and substantial
- 30 (27.3%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $17,869
- Amount paid so far
- $17,869
- Inspections
- 109
- Inspector hours on site
- 867
- Citations per inspection
- 1.01 (all mines 2.30)
- Accident reports
- 13
- Injury and illness cases
- 13
- Fatalities
- 0
- Latest MSHA record
- October 15, 2026
Operators with the most open mines in Kalamazoo 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 |
|---|---|---|---|---|---|
| Aggregate Resources Inc | 7 | 36 | 37 | $6,167 | 12 |
| Top Grade Aggregates, LLC | 1 | 6 | 31 | $5,626 | 0 |
| Byholt Inc | 1 | 4 | 24 | $3,485 | 0 |
| Balkema Sitework & Development, LLC | 1 | 2 | 13 | $1,895 | 0 |
| Amrize Great Lakes Inc. | 1 | 8 | 5 | $696 | 1 |
Operators with the most citations in Kalamazoo 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 |
|---|---|---|---|---|---|
| Aggregate Resources Inc | 7 | 36 | 37 | $6,167 | 12 |
| Top Grade Aggregates, LLC | 1 | 6 | 31 | $5,626 | 0 |
| Byholt Inc | 1 | 4 | 24 | $3,485 | 0 |
| Balkema Sitework & Development, LLC | 1 | 2 | 13 | $1,895 | 0 |
| Amrize Great Lakes Inc. | 1 | 8 | 5 | $696 | 1 |
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 |
|---|---|---|---|---|---|
| Kalamazoo | Top Grade Aggregates, LLC | Kalamazoo County, MI | Construction sand and gravel | 6 | 31 |
| Byholt Sand & Gravel | Byholt Inc | Kalamazoo County, MI | Construction sand and gravel | 4 | 24 |
| Hillside Gravel | Balkema Sitework & Development, LLC | Kalamazoo County, MI | Construction sand and gravel | 2 | 13 |
| Aggregate Resources Gravel Pit | Aggregate Resources Inc | Kalamazoo County, MI | Construction sand and gravel | 10 | 12 |
| 4TH Street | Aggregate Resources Inc | Kalamazoo County, MI | Construction sand and gravel | 8 | 9 |
| Midway Pit | Aggregate Resources Inc | Kalamazoo County, MI | Construction sand and gravel | 7 | 7 |
| Amrize Kalamazoo West Plant | Amrize Great Lakes Inc. | Kalamazoo County, MI | Construction sand and gravel | 8 | 5 |
| Portable Plant 104 | Aggregate Resources Inc | Kalamazoo County, MI | Construction sand and gravel | 2 | 5 |
| Portable Plant #103 | Aggregate Resources Inc | Kalamazoo County, MI | Construction sand and gravel | 3 | 2 |
| Ravine Rd Pit | Aggregate Resources Inc | Kalamazoo County, MI | Construction sand and gravel | 3 | 2 |
| Plant #102 | Aggregate Resources Inc | Kalamazoo County, MI | Construction sand and gravel | 3 | 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 | 39 | 12 | $5,762 | 1 |
| 2023 | 25 | 1 | $4,101 | 5 |
| 2024 | 21 | 10 | $4,118 | 5 |
| 2025 | 9 | 4 | $1,708 | 2 |
| 2026 | 16 | 3 | $2,180 | 0 |
Standards cited most at mines in Kalamazoo 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 56.14112 | Surface metal and nonmetal mines | 11 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.16006 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.11002 | Surface metal and nonmetal mines | 4 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 4 |
| 30 CFR 56.4101 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12002 | Surface metal and nonmetal mines | 3 |
Injury and illness cases at mines in Kalamazoo 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 | 9 |
What the accident reports at mines in Kalamazoo County, Michigan describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 5 |
| Machinery | 3 |
| Handtools (nonpowered) | 2 |
| Other | 1 |
| Powered haulage | 1 |
| Handling of materials | 1 |
Equipment named in accident reports at mines in Kalamazoo County, Michigan
| Equipment | Reports |
|---|---|
| Hand tools (powered) | 3 |
| Hand tools (not powered) | 2 |
| Scraper loader | 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.