Data / Mines / New York / Delaware County
Mines in Delaware County, New York: 33 open mines
MSHA lists 33 open mines in Delaware County, New York, run by 25 operators and employing 75 people. Since January 1, 2022 its inspectors issued 176 citations and orders there with $27,109 in proposed penalties, and operators reported 1 injury or illness case. The operators with the most open mines are Schaefer Enterprises of Deposit; Seward Sand & Gravel Inc; Sonny and Sons Stone Company LLC. Data from MSHA, November 6, 2026.
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- Open mines
- 33
- Operators
- 25
- Employees
- 75
- Intermittent
- 26
- Temporarily Idled
- 3
- Active
- 2
- New Mine
- 2
- Mines run by individuals, counted and not listed
- 7
- Citations and orders since January 1, 2022
- 176
- Significant and substantial
- 20 (11.4%)
- Closure orders
- 4
- High negligence or reckless
- 6
- Proposed penalties
- $27,109
- Amount paid so far
- $24,089
- Inspections
- 160
- Inspector hours on site
- 845
- Citations per inspection
- 1.10 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- October 7, 2026
Operators with the most open mines in Delaware County, New York
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 |
|---|---|---|---|---|---|
| Schaefer Enterprises of Deposit | 3 | 12 | 18 | $2,606 | 0 |
| Seward Sand & Gravel Inc | 2 | 4 | 26 | $4,110 | 1 |
| Sonny and Sons Stone Company LLC | 2 | 3 | 1 | $147 | 0 |
| Tompkins Bluestone Company Inc | 2 | 3 | 0 | $0 | 0 |
| Sanford Stone LLC | 1 | 6 | 23 | $4,307 | 0 |
| Cobleskill Stone Products Inc | 1 | 12 | 12 | $1,788 | 0 |
| Eklund Farm Machinery Inc | 1 | 2 | 10 | $1,510 | 0 |
| Town of Davenport Highway Department | 1 | 4 | 7 | $1,071 | 0 |
| Double Axe Stone Company LLC | 1 | 4 | 6 | $890 | 0 |
| Delaware Bulldozing Corp. | 1 | 1 | 5 | $747 | 0 |
| Robinson Brothers | 1 | 1 | 5 | $0 | 0 |
| Town Of Hancock | 1 | 2 | 5 | $789 | 0 |
| Delaware Sand & Gravel | 1 | 0 | 4 | $604 | 0 |
| Aden Mining & Materials | 1 | 4 | 3 | $453 | 0 |
| Long Eddy Quarry LLC | 1 | 2 | 3 | $453 | 0 |
| Moldenhauer Quarry | 1 | 3 | 3 | $453 | 0 |
| LA Fever Sand & Gravel, LLC | 1 | 1 | 2 | $298 | 0 |
| Town Of Harpersfield | 1 | 0 | 2 | $302 | 0 |
| Ted Kilmer Stone LLC | 1 | 1 | 1 | $143 | 0 |
| Aag Sand & Gravel | 1 | 2 | 0 | $0 | 0 |
| Otsego Custom Crushing | 1 | 0 | 0 | $0 | 0 |
Operators with the most citations in Delaware County, New York
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Seward Sand & Gravel Inc | 2 | 4 | 26 | $4,110 | 1 |
| Sanford Stone LLC | 1 | 6 | 23 | $4,307 | 0 |
| Schaefer Enterprises of Deposit | 3 | 12 | 18 | $2,606 | 0 |
| Cobleskill Stone Products Inc | 1 | 12 | 12 | $1,788 | 0 |
| Eklund Farm Machinery Inc | 1 | 2 | 10 | $1,510 | 0 |
| Town of Davenport Highway Department | 1 | 4 | 7 | $1,071 | 0 |
| Double Axe Stone Company LLC | 1 | 4 | 6 | $890 | 0 |
| Delaware Bulldozing Corp. | 1 | 1 | 5 | $747 | 0 |
| Robinson Brothers | 1 | 1 | 5 | $0 | 0 |
| Town Of Hancock | 1 | 2 | 5 | $789 | 0 |
| Delaware Sand & Gravel | 1 | 0 | 4 | $604 | 0 |
| Aden Mining & Materials | 1 | 4 | 3 | $453 | 0 |
| Long Eddy Quarry LLC | 1 | 2 | 3 | $453 | 0 |
| Moldenhauer Quarry | 1 | 3 | 3 | $453 | 0 |
| LA Fever Sand & Gravel, LLC | 1 | 1 | 2 | $298 | 0 |
| Town Of Harpersfield | 1 | 0 | 2 | $302 | 0 |
| Sonny and Sons Stone Company LLC | 2 | 3 | 1 | $147 | 0 |
| Ted Kilmer Stone LLC | 1 | 1 | 1 | $143 | 0 |
| Tompkins Bluestone Company Inc | 2 | 3 | 0 | $0 | 0 |
| Aag Sand & Gravel | 1 | 2 | 0 | $0 | 0 |
| Otsego Custom Crushing | 1 | 0 | 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 |
|---|---|---|---|---|---|
| Silver Lake Quarry | Sanford Stone LLC | Delaware County, NY | Dimension stone | 6 | 23 |
| Gillette Quarry | Seward Sand & Gravel Inc | Delaware County, NY | Construction sand and gravel | 2 | 15 |
| Hancock Quarry | Cobleskill Stone Products Inc | Delaware County, NY | Crushed, broken traprock | 12 | 12 |
| Deposit Quarry | Schaefer Enterprises of Deposit | Delaware County, NY | Crushed, broken stone | 4 | 11 |
| Rider Pit | Seward Sand & Gravel Inc | Delaware County, NY | Construction sand and gravel | 2 | 11 |
| Eklund Gravel Bank #2 | Eklund Farm Machinery Inc | Delaware County, NY | Construction sand and gravel | 2 | 10 |
| Town Pit County Rte 10 | Town of Davenport Highway Department | Delaware County, NY | Construction sand and gravel | 4 | 7 |
| Cole RD Quarry | Double Axe Stone Company LLC | Delaware County, NY | Dimension stone | 4 | 6 |
| Roods Creek Quarry | Schaefer Enterprises of Deposit | Delaware County, NY | Dimension stone | 4 | 5 |
| Scalper 77C | Town Of Hancock | Delaware County, NY | Construction sand and gravel | 2 | 5 |
| Extec 5000 | Delaware Bulldozing Corp. | Delaware County, NY | Construction sand and gravel | 1 | 5 |
| Robinson Bros. | Robinson Brothers | Delaware County, NY | Crushed, broken stone | 1 | 5 |
| Freedom 1776, Hamden Quarry | Delaware Sand & Gravel | Delaware County, NY | Dimension stone | 0 | 4 |
| Deposit Gravel Pit | Aden Mining & Materials | Delaware County, NY | Construction sand and gravel | 4 | 3 |
| Moldenhauer Quarry | Moldenhauer Quarry | Delaware County, NY | Crushed, broken stone | 3 | 3 |
| Long Eddy Quarry | Long Eddy Quarry LLC | Delaware County, NY | Dimension stone | 2 | 3 |
| Route 8 Quarry | Schaefer Enterprises of Deposit | Delaware County, NY | Dimension stone | 4 | 2 |
| Power Screen Chieftain 1400 | LA Fever Sand & Gravel, LLC | Delaware County, NY | Construction sand and gravel | 1 | 2 |
| Brandow Pit | Town Of Harpersfield | Delaware County, NY | Construction sand and gravel | 0 | 2 |
| Masonville Quarry | Ted Kilmer Stone LLC | Delaware County, NY | Dimension stone | 1 | 1 |
| Lee Moat Quarry | Sonny and Sons Stone Company LLC | Delaware County, NY | Dimension stone | 1 | 1 |
| Klondike Road Quarry | Sonny and Sons Stone Company LLC | Delaware County, NY | Dimension stone | 2 | 0 |
| Aag Sand & Gravel | Aag Sand & Gravel | Delaware County, NY | Construction sand and gravel | 2 | 0 |
| Chan Quarry | Tompkins Bluestone Company Inc | Delaware County, NY | Dimension stone | 2 | 0 |
| Lordville Quarry | Tompkins Bluestone Company Inc | Delaware County, NY | Dimension stone | 1 | 0 |
| Mccloskey 710932 | Otsego Custom Crushing | Delaware County, NY | Crushed, broken stone | 0 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 15 | 45.5% |
| Dimension stone | 11 | 33.3% |
| Crushed, broken stone | 5 | 15.2% |
| Crushed, broken traprock | 1 | 3% |
| Dimension sandstone | 1 | 3% |
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 | 6 | 0 | $798 | 0 |
| 2023 | 33 | 7 | $5,566 | 1 |
| 2024 | 26 | 2 | $4,700 | 0 |
| 2025 | 51 | 5 | $7,964 | 0 |
| 2026 | 60 | 6 | $8,081 | 0 |
Standards cited most at mines in Delaware County, New York
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 | 32 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 16 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.4200 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.4104 | Surface metal and nonmetal mines | 3 |
| 30 CFR 47.41 | Hazard communication | 3 |
| 30 CFR 56.15001 | Surface metal and nonmetal mines | 3 |
Injury and illness cases at mines in Delaware County, New York
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
What the accident reports at mines in Delaware County, New York describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 1 |
Equipment named in accident reports at mines in Delaware County, New York
| Equipment | Reports |
|---|---|
| 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.