Data / Mines / Ohio / Subtropolis
Subtropolis, Mahoning County, Ohio: 84 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Subtropolis is an active crushed, broken limestone underground mine in Mahoning County, Ohio, operated by Subtropolis Mining Co. with 35 employees on MSHA's record (mine ID 3304547). Since January 1, 2022 MSHA inspectors issued 84 citations and orders there with $15,575 in proposed penalties, and 2 accident reports were filed there, with 2 injury or illness cases.
The request: Watch Subtropolis (MSHA mine ID 3304547) in Mahoning County, Ohio: 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
- 3304547
- Status
- Active since July 26, 2005
- Main commodity
- Crushed, broken limestone
- Mine type
- Underground
- County
- Mahoning County, Ohio
- Nearest town
- Petersburg
- Operator
- Subtropolis Mining Co.
- Employees
- 35
- MSHA field office
- Warrendale PA Field Office
- Citations and orders since January 1, 2022
- 84
- Significant and substantial
- 5 (6.0%)
- Closure orders
- 0
- High negligence or reckless
- 1
- Proposed penalties
- $15,575
- Amount paid so far
- $15,575
- Inspections
- 27
- Inspector hours on site
- 580
- Citations per inspection
- 3.11 (all mines 2.30)
- Accident reports
- 2
- Injury and illness cases
- 2
- Fatalities
- 0
- Latest MSHA record
- July 24, 2026
- Citations issued to contractors here
- 1 ($147 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 | 20 | 2 | $4,029 | 0 |
| 2023 | 19 | 0 | $2,717 | 0 |
| 2024 | 16 | 0 | $2,352 | 1 |
| 2025 | 17 | 1 | $3,007 | 1 |
| 2026 | 12 | 2 | $3,470 | 0 |
Standards cited most at Subtropolis
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 57.3200 | Underground metal and nonmetal mines | 7 |
| 30 CFR 57.14100 | Underground metal and nonmetal mines | 6 |
| 30 CFR 57.12018 | Underground metal and nonmetal mines | 4 |
| 30 CFR 57.12032 | Underground metal and nonmetal mines | 4 |
| 30 CFR 57.14107 | Underground metal and nonmetal mines | 4 |
| 30 CFR 57.14132 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.8520 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.20003 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.4460 | Underground metal and nonmetal mines | 3 |
| 30 CFR 47.41 | Hazard communication | 2 |
| 30 CFR 57.14112 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.14101 | Underground metal and nonmetal mines | 2 |
| 30 CFR 47.44 | Hazard communication | 2 |
| 30 CFR 57.12004 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.4101 | Underground metal and nonmetal mines | 2 |
Injury and illness cases at Subtropolis
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 2 |
What the accident reports at Subtropolis describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 1 |
| Machinery | 1 |
Equipment named in accident reports at Subtropolis
| Equipment | Reports |
|---|---|
| Crane | 1 |
Other open mines in Mahoning County, Ohio
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Honey Creek Pit | East Fairfield Coal Co., Limestone Division | Mahoning County, OH | Crushed, broken limestone | 4 | 65 |
| City Stone Crusher | City Stone LLC | Mahoning County, OH | Crushed, broken limestone | 8 | 14 |
| Petersburg | City Stone LLC | Mahoning County, OH | Crushed, broken limestone | 9 | 13 |
| Tiger Mine | Commercial Minerals Inc | Mahoning County, OH | Crushed, broken limestone | 9 | 2 |
| City Stone 534 Pit | City Stone LLC | Mahoning County, OH | Construction sand and gravel | 5 | 0 |
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.