Data / Mines / Illinois / Dupo Plant #9
Dupo Plant #9, St Clair County, Illinois: 64 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Dupo Plant #9 is an active crushed, broken limestone surface mine in St Clair County, Illinois, operated by Columbia Quarry Company LLC with 18 employees on MSHA's record (mine ID 1100039). Since January 1, 2022 MSHA inspectors issued 64 citations and orders there with $19,883 in proposed penalties, and 7 accident reports were filed there, with 7 injury or illness cases.
The request: Watch Dupo Plant #9 (MSHA mine ID 1100039) in St Clair County, Illinois: 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
- 1100039
- Status
- Active since October 22, 1993
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- St Clair County, Illinois
- Nearest town
- Dupo
- Operator
- Columbia Quarry Company LLC
- Employees
- 18
- MSHA field office
- Litchfield IL Field Office
- Citations and orders since January 1, 2022
- 64
- Significant and substantial
- 13 (20.3%)
- Closure orders
- 0
- High negligence or reckless
- 4
- Proposed penalties
- $19,883
- Amount paid so far
- $18,740
- Inspections
- 15
- Inspector hours on site
- 292
- Citations per inspection
- 4.27 (all mines 2.30)
- Accident reports
- 7
- Injury and illness cases
- 7
- Fatalities
- 0
- Latest MSHA record
- August 19, 2026
- Citations issued to contractors here
- 5 ($1,311 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 | 19 | 3 | $5,915 | 2 |
| 2023 | 5 | 1 | $1,136 | 3 |
| 2024 | 11 | 0 | $1,673 | 1 |
| 2025 | 16 | 7 | $8,077 | 0 |
| 2026 | 13 | 2 | $3,082 | 1 |
Standards cited most at Dupo Plant #9
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 | 9 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14109 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.4104 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14206 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4430 | Surface metal and nonmetal mines | 1 |
| 30 CFR 48.7 | Training of miners | 1 |
Injury and illness cases at Dupo Plant #9
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 6 |
| No lost time, or an occupational illness | 1 |
What the accident reports at Dupo Plant #9 describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 3 |
| Machinery | 1 |
| Handling of materials | 1 |
| Powered haulage | 1 |
| Handtools (nonpowered) | 1 |
Equipment named in accident reports at Dupo Plant #9
| Equipment | Reports |
|---|---|
| Hoist | 1 |
| Conveyor | 1 |
| Front-end loader | 1 |
| Forklift | 1 |
| Screen | 1 |
| Hand tools (not powered) | 1 |
Other open mines in St Clair County, Illinois
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Falling Springs Quarry | Falling Springs Quarry Company | St Clair County, IL | Crushed, broken limestone | 26 | 49 |
| Columbia Plant #1 | Columbia Quarry Company LLC | St Clair County, IL | Crushed, broken limestone | 3 | 15 |
| Watco Transloading/ Cahokia Terminals | Watco Trans Loading LLC | St Clair County, IL | Coal (bituminous) | 25 | 4 |
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.