Data / Mines / Connecticut / O & G Prospect Quarry #3
O & G Prospect Quarry #3: 1 MSHA citation
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
O & G Prospect Quarry #3 is an intermittent crushed, broken granite surface mine in New Haven County, Connecticut, operated by O & G Industries Inc with 3 employees on MSHA's record (mine ID 0600259). Since January 1, 2022 MSHA inspectors issued 1 citation and orders there with $151 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch O & G Prospect Quarry #3 (MSHA mine ID 0600259) in New Haven County, Connecticut: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 0600259
- Status
- Intermittent since June 5, 2025
- Main commodity
- Crushed, broken granite
- Mine type
- Surface
- County
- New Haven County, Connecticut
- Nearest town
- Prospect
- Operator
- O & G Industries Inc
- Employees
- 3
- MSHA field office
- Albany NY Field Office
- Citations and orders since January 1, 2022
- 1
- Significant and substantial
- 0 (0.0%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $151
- Amount paid so far
- $151
- Inspections
- 2
- Inspector hours on site
- 29
- Citations per inspection
- 0.50 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- June 16, 2026
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 |
|---|---|---|---|---|
| 2025 | 1 | 0 | $151 | 0 |
Standards cited most at O & G Prospect Quarry #3
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 56.14101 | Surface metal and nonmetal mines | 1 |
Other open mines in New Haven County, Connecticut
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| 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 |
| Wallingford Quarry | Tilcon Connecticut Inc. | New Haven County, CT | Crushed, broken stone | 2 | 20 |
| Defeo Portable Plant | Defeo Materials LLC | New Haven County, CT | Crushed, broken stone | 4 | 18 |
| Haynes Aggregates, Seymour LLC | Haynes Materials Company | New Haven County, CT | Crushed, broken stone | 11 | 15 |
| Goliath-7 | Guerrera Construction Company Inc | New Haven County, CT | Crushed, broken stone | 3 | 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 |
| Split Rock | F&F Materials, LLC | New Haven County, CT | Crushed, broken stone | 5 | 6 |
| Beacon Falls Wash Plant #2 | O & G Industries Inc | New Haven County, CT | Construction sand and gravel | 2 | 3 |
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.