Data / Mines / New Hampshire / Hillsborough County
Mines in Hillsborough County, New Hampshire: 29 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 29 open mines in Hillsborough County, New Hampshire, run by 22 operators and employing 90 people. Since January 1, 2022 its inspectors issued 248 citations and orders there with $50,112 in proposed penalties, and operators reported 6 injury or illness cases. The operators with the most open mines are Granite State Concrete Company Inc; Georgia Stone Management LLC; C J Bolton Inc. Data from MSHA, November 6, 2026.
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- Open mines
- 29
- Operators
- 22
- Employees
- 90
- Intermittent
- 18
- Active
- 7
- Temporarily Idled
- 4
- Mines run by individuals, counted and not listed
- 3
- Citations and orders since January 1, 2022
- 248
- Significant and substantial
- 41 (16.5%)
- Closure orders
- 9
- High negligence or reckless
- 19
- Proposed penalties
- $50,112
- Amount paid so far
- $39,342
- Inspections
- 167
- Inspector hours on site
- 857
- Citations per inspection
- 1.49 (all mines 2.30)
- Accident reports
- 7
- Injury and illness cases
- 6
- Fatalities
- 0
- Latest MSHA record
- October 22, 2026
Operators with the most open mines in Hillsborough County, New Hampshire
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 |
|---|---|---|---|---|---|
| Granite State Concrete Company Inc | 3 | 10 | 26 | $3,818 | 0 |
| Georgia Stone Management LLC | 2 | 8 | 17 | $2,508 | 1 |
| C J Bolton Inc | 2 | 4 | 16 | $2,380 | 0 |
| Productive Power Excavating Inc. | 2 | 3 | 13 | $2,102 | 0 |
| Thibeault Corp Of Ne | 2 | 2 | 7 | $1,057 | 0 |
| Leighton a White Inc | 2 | 3 | 3 | $449 | 0 |
| Northeast Sand and Gravel | 1 | 2 | 34 | $7,635 | 0 |
| Harris Construction CO Inc | 1 | 7 | 32 | $5,331 | 0 |
| Continental Paving Inc | 1 | 10 | 27 | $5,069 | 1 |
| The Philip H Mathewson Co Inc | 1 | 3 | 16 | $2,431 | 0 |
| Associated Aggregates LLC | 1 | 2 | 14 | $3,059 | 0 |
| Brox Industries Incorporated | 1 | 14 | 14 | $2,644 | 3 |
| Big Foote Crushing LLC | 1 | 5 | 12 | $1,724 | 0 |
| Brownie's Sand & Gravel Inc | 1 | 3 | 4 | $564 | 0 |
| Francestown Sand & Gravel, Inc. | 1 | 2 | 3 | $455 | 0 |
| D.H. Hardwick + Sons, Inc. | 1 | 2 | 2 | $298 | 0 |
| John E. Neville Excavating Inc. | 1 | 2 | 1 | $147 | 1 |
| Cssi Contractors | 1 | 3 | 0 | $0 | 0 |
| Pike Industries | 1 | 0 | 0 | $0 | 0 |
Operators with the most citations in Hillsborough County, New Hampshire
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Northeast Sand and Gravel | 1 | 2 | 34 | $7,635 | 0 |
| Harris Construction CO Inc | 1 | 7 | 32 | $5,331 | 0 |
| Continental Paving Inc | 1 | 10 | 27 | $5,069 | 1 |
| Granite State Concrete Company Inc | 3 | 10 | 26 | $3,818 | 0 |
| Georgia Stone Management LLC | 2 | 8 | 17 | $2,508 | 1 |
| C J Bolton Inc | 2 | 4 | 16 | $2,380 | 0 |
| The Philip H Mathewson Co Inc | 1 | 3 | 16 | $2,431 | 0 |
| Associated Aggregates LLC | 1 | 2 | 14 | $3,059 | 0 |
| Brox Industries Incorporated | 1 | 14 | 14 | $2,644 | 3 |
| Productive Power Excavating Inc. | 2 | 3 | 13 | $2,102 | 0 |
| Big Foote Crushing LLC | 1 | 5 | 12 | $1,724 | 0 |
| Thibeault Corp Of Ne | 2 | 2 | 7 | $1,057 | 0 |
| Brownie's Sand & Gravel Inc | 1 | 3 | 4 | $564 | 0 |
| Leighton a White Inc | 2 | 3 | 3 | $449 | 0 |
| Francestown Sand & Gravel, Inc. | 1 | 2 | 3 | $455 | 0 |
| D.H. Hardwick + Sons, Inc. | 1 | 2 | 2 | $298 | 0 |
| John E. Neville Excavating Inc. | 1 | 2 | 1 | $147 | 1 |
| Cssi Contractors | 1 | 3 | 0 | $0 | 0 |
| Pike Industries | 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 |
|---|---|---|---|---|---|
| Peterborough Pit | Northeast Sand and Gravel | Hillsborough County, NH | Construction sand and gravel | 2 | 34 |
| Harris Construction CO Inc | Harris Construction CO Inc | Hillsborough County, NH | Construction sand and gravel | 7 | 32 |
| Litchfield Sand & Gravel | Continental Paving Inc | Hillsborough County, NH | Crushed, broken granite | 10 | 27 |
| Mt William Quarry | C J Bolton Inc | Hillsborough County, NH | Construction sand and gravel | 4 | 16 |
| Mathewson Pit | The Philip H Mathewson Co Inc | Hillsborough County, NH | Construction sand and gravel | 3 | 16 |
| Kitledge Quarry | Georgia Stone Management LLC | Hillsborough County, NH | Dimension stone | 5 | 15 |
| Granite State Concrete Pit & Mill | Granite State Concrete Company Inc | Hillsborough County, NH | Crushed, broken granite | 5 | 15 |
| Hudson NH Plant | Brox Industries Incorporated | Hillsborough County, NH | Crushed, broken traprock | 14 | 14 |
| Associated Aggregate | Associated Aggregates LLC | Hillsborough County, NH | Construction sand and gravel | 2 | 14 |
| Lokotrack ST243 Ser #181540 | Productive Power Excavating Inc. | Hillsborough County, NH | Construction sand and gravel | 3 | 13 |
| Portable Unit #1 | Big Foote Crushing LLC | Hillsborough County, NH | Construction sand and gravel | 5 | 12 |
| Granite State Concrete Quarry | Granite State Concrete Company Inc | Hillsborough County, NH | Construction sand and gravel | 4 | 11 |
| New Boston Sand & Stone | Thibeault Corp Of Ne | Hillsborough County, NH | Construction sand and gravel | 1 | 5 |
| Brownie's Sand & Gravel Inc | Brownie's Sand & Gravel Inc | Hillsborough County, NH | Construction sand and gravel | 3 | 4 |
| Bennington Pit | Francestown Sand & Gravel, Inc. | Hillsborough County, NH | Construction sand and gravel | 2 | 3 |
| Mason Quarry | Georgia Stone Management LLC | Hillsborough County, NH | Dimension stone | 3 | 2 |
| D.H. Hardwick + Sons, Inc. | D.H. Hardwick + Sons, Inc. | Hillsborough County, NH | Construction sand and gravel | 2 | 2 |
| Weare Farm | Thibeault Corp Of Ne | Hillsborough County, NH | Construction sand and gravel | 1 | 2 |
| McCloskey R155 | Leighton a White Inc | Hillsborough County, NH | Construction sand and gravel | 0 | 2 |
| Wilton Quarry | Leighton a White Inc | Hillsborough County, NH | Construction sand and gravel | 3 | 1 |
| Neville Materials LLC | John E. Neville Excavating Inc. | Hillsborough County, NH | Construction sand and gravel | 2 | 1 |
| Little Hill Pit | Cssi Contractors | Hillsborough County, NH | Construction sand and gravel | 3 | 0 |
| Portable Crusher #1 | Granite State Concrete Company Inc | Hillsborough County, NH | Construction sand and gravel | 1 | 0 |
| C J Bolton Portable Crusher #2 | C J Bolton Inc | Hillsborough County, NH | Construction sand and gravel | 0 | 0 |
| Pike Industries Inc C1664 | Pike Industries | Hillsborough County, NH | Construction sand and gravel | 0 | 0 |
| Sandvik QJ241-10750 | Productive Power Excavating Inc. | Hillsborough County, NH | Construction sand and gravel | 0 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 24 | 82.8% |
| Dimension stone | 2 | 6.9% |
| Crushed, broken granite | 2 | 6.9% |
| Crushed, broken traprock | 1 | 3.4% |
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 | 32 | 6 | $5,599 | 0 |
| 2023 | 59 | 13 | $11,720 | 0 |
| 2024 | 74 | 11 | $12,210 | 2 |
| 2025 | 41 | 3 | $7,567 | 1 |
| 2026 | 42 | 8 | $13,016 | 3 |
Standards cited most at mines in Hillsborough County, New Hampshire
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 | 31 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 19 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 15 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 14 |
| 30 CFR 56.23002 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 7 |
| 30 CFR 46.9 | Training at sand, gravel and surface stone mines | 6 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.4101 | Surface metal and nonmetal mines | 5 |
Injury and illness cases at mines in Hillsborough County, New Hampshire
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 4 |
| No lost time, or an occupational illness | 2 |
What the accident reports at mines in Hillsborough County, New Hampshire describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 4 |
| Slip or fall of person | 1 |
| Dust disease of lungs | 1 |
| Powered haulage | 1 |
Equipment named in accident reports at mines in Hillsborough County, New Hampshire
| Equipment | Reports |
|---|---|
| Ore haulage trucks - off highway trucks | 1 |
| Crusher | 1 |
| Mancar | 1 |
| Screen | 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.