Data / Mines / Michigan / O-N Minerals, Calcite Operation
O-N Minerals, Calcite Operation: 132 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
O-N Minerals, Calcite Operation is an active crushed, broken limestone surface mine in Presque Isle County, Michigan, operated by O-N Minerals (Michigan) Company with 130 employees on MSHA's record (mine ID 2000062). Since January 1, 2022 MSHA inspectors issued 132 citations and orders there with $34,364 in proposed penalties, and 41 accident reports were filed there, with 39 injury or illness cases.
The request: Watch O-N Minerals, Calcite Operation (MSHA mine ID 2000062) in Presque Isle County, Michigan: each new citation and each accident report. $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.
- MSHA mine ID
- 2000062
- Status
- Active since November 2, 1993
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Presque Isle County, Michigan
- Nearest town
- Rogers City
- Operator
- O-N Minerals (Michigan) Company
- Parent company
- Carmeuse Holding SA
- Employees
- 130
- MSHA field office
- Lansing MI Field Office
- Citations and orders since January 1, 2022
- 132
- Significant and substantial
- 17 (12.9%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $34,364
- Amount paid so far
- $34,364
- Inspections
- 22
- Inspector hours on site
- 800
- Citations per inspection
- 6.00 (all mines 2.30)
- Accident reports
- 41
- Injury and illness cases
- 39
- Fatalities
- 0
- Latest MSHA record
- October 20, 2026
- Citations issued to contractors here
- 29 ($4,201 proposed)
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 | 35 | 2 | $5,794 | 6 |
| 2023 | 3 | 0 | $465 | 7 |
| 2024 | 55 | 8 | $12,177 | 12 |
| 2025 | 18 | 2 | $5,557 | 9 |
| 2026 | 21 | 5 | $10,371 | 5 |
Standards cited most at O-N Minerals, Calcite Operation
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 | 10 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.16005 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.4603 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.20011 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.16006 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12019 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12016 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 4 |
Injury and illness cases at O-N Minerals, Calcite Operation
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 33 |
| No lost time, or an occupational illness | 6 |
What the accident reports at O-N Minerals, Calcite Operation describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 20 |
| Slip or fall of person | 7 |
| Stepping or kneeling on object | 3 |
| Machinery | 3 |
| Fire | 2 |
| Powered haulage | 1 |
| Nonpowered haulage | 1 |
| Disorders (physical agents) | 1 |
| Handtools (nonpowered) | 1 |
| Disorders (repeated trauma) | 1 |
Equipment named in accident reports at O-N Minerals, Calcite Operation
| Equipment | Reports |
|---|---|
| Ore haulage trucks - off highway trucks | 3 |
| Welding machine | 2 |
| Hand tools (not powered) | 2 |
| Machine | 1 |
| Road grader | 1 |
| Crusher | 1 |
| Hand tools (powered) | 1 |
Other open mines in Presque Isle County, Michigan
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Amrize Presque Isle Aggregates | Amrize Great Lakes Inc. | Presque Isle County, MI | Crushed, broken limestone | 133 | 82 |
| Hincka Pit | Hincka Logging LLC | Presque Isle County, MI | Construction sand and gravel | 2 | 2 |
| RT Sand & Gravel | RT Sand & Gravel | Presque Isle County, MI | Construction sand and gravel | 2 | 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.