Data / Mines / Connecticut / Windham County
Mines in Windham County, Connecticut: 21 open mines
MSHA lists 21 open mines in Windham County, Connecticut, run by 17 operators and employing 77 people. Since January 1, 2022 its inspectors issued 431 citations and orders there with $96,395 in proposed penalties, and operators reported 8 injury or illness cases. The operators with the most open mines are Rawson Materials; Windham Materials LLC; Barnes Concrete Company Inc. Data from MSHA, November 6, 2026.
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- Open mines
- 21
- Operators
- 17
- Employees
- 77
- Active
- 12
- Intermittent
- 9
- Mines run by individuals, counted and not listed
- 2
- Citations and orders since January 1, 2022
- 431
- Significant and substantial
- 63 (14.6%)
- Closure orders
- 11
- High negligence or reckless
- 32
- Proposed penalties
- $96,395
- Amount paid so far
- $95,926
- Inspections
- 186
- Inspector hours on site
- 1,222
- Citations per inspection
- 2.32 (all mines 2.30)
- Accident reports
- 8
- Injury and illness cases
- 8
- Fatalities
- 0
- Latest MSHA record
- August 20, 2026
Operators with the most open mines in Windham County, Connecticut
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 |
|---|---|---|---|---|---|
| Rawson Materials | 5 | 29 | 86 | $18,305 | 6 |
| Windham Materials LLC | 1 | 3 | 82 | $30,317 | 1 |
| Barnes Concrete Company Inc | 1 | 4 | 60 | $13,668 | 0 |
| Hain Materials Corp | 1 | 6 | 57 | $9,882 | 0 |
| French River Materials of Thompson, LLC | 1 | 3 | 21 | $3,290 | 0 |
| Sammy P Inc | 1 | 4 | 21 | $4,134 | 0 |
| Nu Stone Mfg & Dist LLC | 1 | 1 | 19 | $2,765 | 0 |
| Kobyluck Enterprises Inc | 1 | 3 | 17 | $2,442 | 0 |
| Sansoucy Quarries Inc. | 1 | 5 | 17 | $4,109 | 0 |
| Ernest Joly & Sons Inc | 1 | 5 | 10 | $1,426 | 1 |
| K & H Construction LLC | 1 | 2 | 10 | $1,454 | 0 |
| Oneco Gravel LLC | 1 | 2 | 10 | $1,495 | 0 |
| 81 Ipr LLC | 1 | 1 | 3 | $449 | 0 |
| Miller Bros Sand & Gravel | 1 | 2 | 2 | $290 | 0 |
| Ed's Garage Inc | 1 | 1 | 0 | $0 | 0 |
Operators with the most citations in Windham County, Connecticut
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Rawson Materials | 5 | 29 | 86 | $18,305 | 6 |
| Windham Materials LLC | 1 | 3 | 82 | $30,317 | 1 |
| Barnes Concrete Company Inc | 1 | 4 | 60 | $13,668 | 0 |
| Hain Materials Corp | 1 | 6 | 57 | $9,882 | 0 |
| French River Materials of Thompson, LLC | 1 | 3 | 21 | $3,290 | 0 |
| Sammy P Inc | 1 | 4 | 21 | $4,134 | 0 |
| Nu Stone Mfg & Dist LLC | 1 | 1 | 19 | $2,765 | 0 |
| Kobyluck Enterprises Inc | 1 | 3 | 17 | $2,442 | 0 |
| Sansoucy Quarries Inc. | 1 | 5 | 17 | $4,109 | 0 |
| Ernest Joly & Sons Inc | 1 | 5 | 10 | $1,426 | 1 |
| K & H Construction LLC | 1 | 2 | 10 | $1,454 | 0 |
| Oneco Gravel LLC | 1 | 2 | 10 | $1,495 | 0 |
| 81 Ipr LLC | 1 | 1 | 3 | $449 | 0 |
| Miller Bros Sand & Gravel | 1 | 2 | 2 | $290 | 0 |
| Ed's Garage Inc | 1 | 1 | 0 | $0 | 0 |
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 |
|---|---|---|---|---|---|
| Windham Materials LLC | Windham Materials LLC | Windham County, CT | Construction sand and gravel | 3 | 82 |
| Barnes Concrete Co Inc | Barnes Concrete Company Inc | Windham County, CT | Construction sand and gravel | 4 | 60 |
| Hain Materials Corp | Hain Materials Corp | Windham County, CT | Construction sand and gravel | 6 | 57 |
| Rawson Materials, Plant 5 | Rawson Materials | Windham County, CT | Construction sand and gravel | 5 | 21 |
| Sammy P Inc | Sammy P Inc | Windham County, CT | Construction sand and gravel | 4 | 21 |
| French River Materials | French River Materials of Thompson, LLC | Windham County, CT | Crushed, broken stone | 3 | 21 |
| Plant 2 | Rawson Materials | Windham County, CT | Crushed, broken stone | 7 | 20 |
| Arnio Mine | Nu Stone Mfg & Dist LLC | Windham County, CT | Dimension stone | 1 | 19 |
| Plant 4, Plainfield | Rawson Materials | Windham County, CT | Construction sand and gravel | 4 | 18 |
| Rawson Plant #3 | Rawson Materials | Windham County, CT | Construction sand and gravel | 8 | 17 |
| Sansoucy Quarries Inc. | Sansoucy Quarries Inc. | Windham County, CT | Dimension stone | 5 | 17 |
| Portable Division | Kobyluck Enterprises Inc | Windham County, CT | Crushed, broken stone | 3 | 17 |
| Danielson Pit & Mill | Ernest Joly & Sons Inc | Windham County, CT | Construction sand and gravel | 5 | 10 |
| Plant 1 | Rawson Materials | Windham County, CT | Construction sand and gravel | 5 | 10 |
| K & H Construction Mine | K & H Construction LLC | Windham County, CT | Crushed, broken stone | 2 | 10 |
| Oneco Gravel LLC | Oneco Gravel LLC | Windham County, CT | Construction sand and gravel | 2 | 10 |
| 81 Ipr | 81 Ipr LLC | Windham County, CT | Construction sand and gravel | 1 | 3 |
| Miller Brothers | Miller Bros Sand & Gravel | Windham County, CT | Construction sand and gravel | 2 | 2 |
| Waskiewicz Pit & Plant | Ed's Garage Inc | Windham County, CT | Construction sand and gravel | 1 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 15 | 71.4% |
| Crushed, broken stone | 4 | 19% |
| Dimension stone | 2 | 9.5% |
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 | 82 | 14 | $11,089 | 0 |
| 2023 | 174 | 27 | $43,949 | 1 |
| 2024 | 86 | 11 | $21,471 | 5 |
| 2025 | 53 | 9 | $14,433 | 0 |
| 2026 | 36 | 2 | $5,453 | 2 |
Standards cited most at mines in Windham County, Connecticut
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 50.30 | Reporting of accidents, injuries and illnesses | 49 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 32 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 25 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 25 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 21 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 17 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 16 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 15 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 15 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 11 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 11 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 9 |
| 30 CFR 46.9 | Training at sand, gravel and surface stone mines | 9 |
Injury and illness cases at mines in Windham County, Connecticut
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 7 |
| No lost time, or an occupational illness | 1 |
What the accident reports at mines in Windham County, Connecticut describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 3 |
| Slip or fall of person | 2 |
| Handtools (nonpowered) | 1 |
| Machinery | 1 |
| Powered haulage | 1 |
Equipment named in accident reports at mines in Windham County, Connecticut
| Equipment | Reports |
|---|---|
| Shovel | 2 |
| Hand tools (not powered) | 1 |
| Welding machine | 1 |
| Crusher | 1 |
| Front-end loader | 1 |
Updated November 6, 2026. Read from US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets. 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.