Data / Mines / Illinois / Troy Grove Stone Quarry (MC46)
Troy Grove Stone Quarry (MC46): 35 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Troy Grove Stone Quarry (MC46) is an active crushed, broken limestone surface mine in La Salle County, Illinois, operated by RiverStone Group Inc with 7 employees on MSHA's record (mine ID 1102864). Since January 1, 2022 MSHA inspectors issued 35 citations and orders there with $7,896 in proposed penalties, and 5 accident reports were filed there, with 5 injury or illness cases.
The request: Watch Troy Grove Stone Quarry (MC46) (MSHA mine ID 1102864) in La Salle County, Illinois: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 1102864
- Status
- Active since December 7, 2011
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- La Salle County, Illinois
- Nearest town
- Utica
- Operator
- RiverStone Group Inc
- Parent company
- Riverstone Group
- Employees
- 7
- MSHA field office
- Peru IL Field Office
- Citations and orders since January 1, 2022
- 35
- Significant and substantial
- 5 (14.3%)
- Closure orders
- 1
- High negligence or reckless
- 2
- Proposed penalties
- $7,896
- Amount paid so far
- $7,446
- Inspections
- 13
- Inspector hours on site
- 153
- Citations per inspection
- 2.69 (all mines 2.30)
- Accident reports
- 5
- Injury and illness cases
- 5
- Fatalities
- 0
- Latest MSHA record
- October 30, 2026
- Citations issued to contractors here
- 3 ($441 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 | 15 | 3 | $4,916 | 2 |
| 2023 | 6 | 1 | $1,192 | 1 |
| 2024 | 6 | 1 | $882 | 1 |
| 2025 | 6 | 0 | $906 | 1 |
| 2026 | 2 | 0 | $0 | 0 |
Standards cited most at Troy Grove Stone Quarry (MC46)
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 56.14100 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11003 | Surface metal and nonmetal mines | 1 |
| 30 CFR 50.20-1 | Reporting of accidents, injuries and illnesses | 1 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14200 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14115 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 1 |
| 30 CFR 46.11 | Training at sand, gravel and surface stone mines | 1 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Troy Grove Stone Quarry (MC46)
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 5 |
What the accident reports at Troy Grove Stone Quarry (MC46) describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 3 |
| Machinery | 1 |
| Slip or fall of person | 1 |
Equipment named in accident reports at Troy Grove Stone Quarry (MC46)
| Equipment | Reports |
|---|---|
| Hand tools (powered) | 1 |
Other open mines in La Salle County, Illinois
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Wedron Plant | Wedron Silica LLC | La Salle County, IL | Sand, industrial | 140 | 244 |
| LaSalle Quarry and Mill | Illinois Cement Company | La Salle County, IL | Cement | 123 | 211 |
| Ottawa Plant | U.S. Silica Company, LLC | La Salle County, IL | Ground silica | 124 | 209 |
| Manley Bros. | Manley Bros.Of Indiana Inc | La Salle County, IL | Sand, industrial | 23 | 91 |
| Vermilion Plant (MC47) | RiverStone Group Inc | La Salle County, IL | Crushed, broken limestone | 6 | 39 |
| Amrize Utica Stone Plant | Amrize Mid-America Inc. | La Salle County, IL | Crushed, broken limestone | 8 | 25 |
| Troy Grove Plant | Covia Solutions LLC | La Salle County, IL | Sand, industrial | 4 | 24 |
| Northern White Sand | Northern White Sand LLC | La Salle County, IL | Sand, industrial | 30 | 13 |
| Seneca Sand LLC | Seneca Sand LLC. | La Salle County, IL | Construction sand and gravel | 3 | 5 |
| Sheridan | Tri-Con Materials, Inc. | La Salle County, IL | Construction sand and gravel | 3 | 1 |
| Kellyco Inc Portable | Kellyco Inc | La Salle County, IL | 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.