Data / Mines / Connecticut / Stone mines
Stone mines in Connecticut: 64 open mines and MSHA citations
MSHA lists 64 open stone mines in Connecticut, run by 43 operators and employing 417 people. Since January 1, 2022 its inspectors issued 1,134 citations and orders there with $306,572 in proposed penalties, and operators reported 39 injury or illness cases, 1 of them fatal. The operators with the most open mines are Fay & Wright Excavating Inc; Tilcon Connecticut Inc.; O & G Industries Inc. Data from MSHA, November 6, 2026.
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- Open mines
- 64
- Operators
- 43
- Employees
- 417
- Intermittent
- 36
- Active
- 25
- Temporarily Idled
- 3
- Mines run by individuals, counted and not listed
- 5
- Citations and orders since January 1, 2022
- 1,134
- Significant and substantial
- 167 (14.7%)
- Closure orders
- 31
- High negligence or reckless
- 52
- Proposed penalties
- $306,572
- Amount paid so far
- $283,556
- Inspections
- 467
- Inspector hours on site
- 4,136
- Citations per inspection
- 2.43 (all mines 2.30)
- Accident reports
- 41
- Injury and illness cases
- 39
- Fatalities
- 1
- Latest MSHA record
- October 21, 2026
Operators with the most open mines in Connecticut
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
Operators with the most citations in Connecticut
Citations and orders issued since January 1, 2022 at their open mines here.
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 |
|---|---|---|---|---|---|
| Canaan | Specialty Minerals Inc | Litchfield County, CT | Crushed, broken limestone | 33 | 212 |
| Haynes Aggregates, Deep River , LLC | Haynes Materials Company | Middlesex County, CT | Crushed, broken stone | 1 | 55 |
| Allyndale Corporation | Allyndale Corp | Litchfield County, CT | Crushed, broken limestone | 11 | 44 |
| Getty Granite Salem | CT Superior Stone | New London County, CT | Dimension granite | 23 | 37 |
| Stony Creek | Stony Creek Quarry Corporation | New Haven County, CT | Dimension stone | 9 | 37 |
| York Hill Mine & Mill | The York Hill Trap Rock Quarry Company, Inc. | New Haven County, CT | Crushed, broken stone | 15 | 30 |
| North Branford Quarry | Tilcon Connecticut Inc. | New Haven County, CT | Crushed, broken traprock | 40 | 29 |
| Lisbon Pit & Plant | Holden Earth Products, Inc. | New London County, CT | Crushed, broken stone | 3 | 28 |
| Portable Crusher #3 | Fay & Wright Excavating Inc | Litchfield County, CT | Crushed, broken stone | 3 | 23 |
| Century Aggregates Sand Road Mine | Century Aggregates Inc | Litchfield County, CT | Crushed, broken marble | 5 | 22 |
| French River Materials | French River Materials of Thompson, LLC | Windham County, CT | Crushed, broken stone | 3 | 21 |
| Aj Resources | David Curtis LLC | Litchfield County, CT | Crushed, broken stone | 3 | 21 |
| Mine 1 | F.s.m.services Inc. | Litchfield County, CT | Crushed, broken stone | 1 | 21 |
| Plant 2 | Rawson Materials | Windham County, CT | Crushed, broken stone | 7 | 20 |
| Wallingford Quarry | Tilcon Connecticut Inc. | New Haven County, CT | Crushed, broken stone | 2 | 20 |
| New Britain Quarry | Tilcon Connecticut Inc. | Hartford County, CT | Crushed, broken traprock | 23 | 19 |
| Burns Portable Plant | Burns Construction Company | Fairfield County, CT | Crushed, broken stone | 13 | 19 |
| Arnio Mine | Nu Stone Mfg & Dist LLC | Windham County, CT | Dimension stone | 1 | 19 |
| Defeo Portable Plant | Defeo Materials LLC | New Haven County, CT | Crushed, broken stone | 4 | 18 |
| Portable Crusher #1 | Fay & Wright Excavating Inc | Litchfield County, CT | Crushed, broken stone | 3 | 18 |
| Pit 1 | Bove Brothers, LLC | New London County, CT | Crushed, broken traprock | 7 | 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 |
| GF Plant | Bove Brothers, LLC | New London County, CT | Crushed, broken stone | 4 | 16 |
| Portable Crusher #4 | Fay & Wright Excavating Inc | Litchfield County, CT | Crushed, broken stone | 3 | 16 |
| Haynes Aggregates, Seymour LLC | Haynes Materials Company | New Haven County, CT | Crushed, broken stone | 11 | 15 |
| Portable Jaw | Coit Excavating Inc | New London County, CT | Crushed, broken stone | 4 | 15 |
| Goliath-7 | Guerrera Construction Company Inc | New Haven County, CT | Crushed, broken stone | 3 | 15 |
| Portable Crusher #6 | Fay & Wright Excavating Inc | Litchfield County, CT | Crushed, broken stone | 2 | 15 |
| Quarry No 2 Southbury | O & G Industries Inc | New Haven County, CT | Crushed, broken limestone | 16 | 13 |
| Waterbury Quarry | WSS Holdings LLC | New Haven County, CT | Crushed, broken stone | 10 | 13 |
| Pearl Lake Road Pit & Mill | Tony Calabro Sons Inc | New Haven County, CT | Crushed, broken sandstone | 8 | 12 |
| Beacon Falls Quarry | WSS Holdings LLC | New Haven County, CT | Crushed, broken stone | 3 | 12 |
| Waterville Materials | Level Development Corporation | New Haven County, CT | Crushed, broken stone | 0 | 12 |
| Portable Crusher #2 | Fay & Wright Excavating Inc | Litchfield County, CT | Crushed, broken traprock | 3 | 11 |
| New Milford Plant | O & G Industries Inc | Litchfield County, CT | Crushed, broken stone | 12 | 10 |
| K & H Construction Mine | K & H Construction LLC | Windham County, CT | Crushed, broken stone | 2 | 10 |
| Skyline Quarry | Wayne C Williams-General Construction Inc | Tolland County, CT | Dimension stone | 8 | 9 |
| William Coon & Son, Inc | William Coon & Son, Inc | New London County, CT | Crushed, broken stone | 4 | 9 |
| Portable Crusher #7 | Fay & Wright Excavating Inc | Litchfield County, CT | Crushed, broken stone | 2 | 9 |
| John J. Brennan Const. CO. Inc. | John J Brennan Construction Company Inc | Fairfield County, CT | Crushed, broken stone | 6 | 8 |
| Galasso Materials LLC | Galasso Materials LLC | Hartford County, CT | Crushed, broken traprock | 29 | 6 |
| Split Rock | F&F Materials, LLC | New Haven County, CT | Crushed, broken stone | 5 | 6 |
| Tower Hill Granite | Tower Hill Granite Company Inc | Hartford County, CT | Dimension stone | 8 | 5 |
| Burrville Quarry | O & G Industries Inc | Litchfield County, CT | Crushed, broken granite | 1 | 4 |
| Chapman Crushing Service Inc | Chapman Crushing Service Inc | New London County, CT | Crushed, broken stone | 4 | 3 |
| Glastonbury | Windham Materials LLC | Hartford County, CT | Crushed, broken stone | 3 | 3 |
| Liberty Hill Quarry | Liberty Hill Quarry, LLC | New London County, CT | Dimension stone | 2 | 3 |
| Pine Valley Materials, LLC | Pine Valley Materials LLC | Litchfield County, CT | Crushed, broken stone | 2 | 3 |
| Quarry No 1-Woodbury | O & G Industries Inc | Litchfield County, CT | Crushed, broken traprock | 3 | 2 |
| Haynes Quarry | JDG Materials LLC | Middlesex County, CT | Crushed, broken stone | 3 | 2 |
| John J Brennan Const CO #267 Portable Metso Crushe | John J Brennan Construction Company Inc | Fairfield County, CT | Crushed, broken stone | 2 | 2 |
| Portable 300 | John J Brennan Construction Company Inc | Fairfield County, CT | Crushed, broken stone | 6 | 1 |
| O & G Prospect Quarry #3 | O & G Industries Inc | New Haven County, CT | Crushed, broken granite | 3 | 1 |
| Powerscreen Chiefton 1700X | Tilcon Connecticut Inc. | Hartford County, CT | Crushed, broken stone | 2 | 1 |
| Tilcon Newington Quarry | Tilcon Connecticut Inc. | Hartford County, CT | Crushed, broken traprock | 1 | 1 |
| Powerscreen Chieftain 88.574023 | Tilcon Connecticut Inc. | Hartford County, CT | Crushed, broken stone | 1 | 1 |
| Renz Quarry Products | Renz Construction | New London County, CT | Crushed, broken granite | 0 | 1 |
| Portable Crusher #8 | Fay & Wright Excavating Inc | Litchfield County, CT | Crushed, broken limestone | 3 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Crushed, broken stone | 40 | 62.5% |
| Crushed, broken traprock | 7 | 10.9% |
| Dimension stone | 6 | 9.4% |
| Crushed, broken limestone | 4 | 6.2% |
| Crushed, broken granite | 4 | 6.2% |
| Crushed, broken sandstone | 1 | 1.6% |
| Crushed, broken marble | 1 | 1.6% |
| Dimension granite | 1 | 1.6% |
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 | 161 | 22 | $50,758 | 7 |
| 2023 | 291 | 38 | $88,762 | 6 |
| 2024 | 259 | 51 | $74,869 | 9 |
| 2025 | 214 | 25 | $56,557 | 3 |
| 2026 | 209 | 31 | $35,626 | 14 |
Standards cited most at stone mines in 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 56.14107 | Surface metal and nonmetal mines | 99 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 80 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 59 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 53 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 52 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 50 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 50 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 48 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 44 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 32 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 30 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 27 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 27 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 26 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 24 |
Injury and illness cases at stone mines in Connecticut
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Fatality | 1 |
| Days away from work or restricted activity | 25 |
| No lost time, or an occupational illness | 13 |
What the accident reports at stone mines in Connecticut describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 12 |
| Slip or fall of person | 7 |
| Powered haulage | 6 |
| Machinery | 4 |
| Disorders (repeated trauma) | 4 |
| Other | 2 |
| Handtools (nonpowered) | 2 |
| Fire | 1 |
| Striking or bumping | 1 |
| Stepping or kneeling on object | 1 |
Equipment named in accident reports at stone mines in Connecticut
| Equipment | Reports |
|---|---|
| Front-end loader | 3 |
| Conveyor | 3 |
| Hand tools (powered) | 2 |
| Hand tools (not powered) | 2 |
| Welding machine | 2 |
| Crusher | 2 |
| Locomotive | 1 |
| Carriage-mounted drills | 1 |
| Mine car | 1 |
| Ore haulage trucks - off highway trucks | 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.