Data / Mines / Maine / Penobscot County
Mines in Penobscot County, Maine: 40 open mines
MSHA lists 40 open mines in Penobscot County, Maine, run by 21 operators and employing 94 people. Since January 1, 2022 its inspectors issued 221 citations and orders there with $39,576 in proposed penalties, and operators reported 5 injury or illness cases. The operators with the most open mines are Sargent Corporation; Thornton Construction Inc; Eurovia Atlantic Coast LLC. Data from MSHA, November 6, 2026.
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- Open mines
- 40
- Operators
- 21
- Employees
- 94
- Intermittent
- 29
- Temporarily Idled
- 6
- Active
- 5
- Mines run by individuals, counted and not listed
- 9
- Citations and orders since January 1, 2022
- 221
- Significant and substantial
- 41 (18.6%)
- Closure orders
- 8
- High negligence or reckless
- 17
- Proposed penalties
- $39,576
- Amount paid so far
- $39,468
- Inspections
- 180
- Inspector hours on site
- 966
- Citations per inspection
- 1.23 (all mines 2.30)
- Accident reports
- 5
- Injury and illness cases
- 5
- Fatalities
- 0
- Latest MSHA record
- October 31, 2026
Operators with the most open mines in Penobscot County, Maine
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 |
|---|---|---|---|---|---|
| Sargent Corporation | 6 | 16 | 29 | $5,304 | 2 |
| Thornton Construction Inc | 4 | 5 | 13 | $1,851 | 0 |
| Eurovia Atlantic Coast LLC | 3 | 17 | 11 | $1,625 | 3 |
| Whitmore Contracting Inc. | 3 | 6 | 9 | $1,374 | 0 |
| B & C Sand and Gravel, Inc. | 2 | 4 | 61 | $15,292 | 0 |
| Owen J Folsom Inc | 2 | 6 | 9 | $1,309 | 0 |
| Ha Higgins and Son Inc | 1 | 2 | 16 | $2,120 | 0 |
| Emery Lee & Sons Inc | 1 | 2 | 9 | $1,319 | 0 |
| Streets Landscape & Lawn Care Inc | 1 | 2 | 8 | $1,388 | 0 |
| Superior Crushing, Inc. | 1 | 3 | 8 | $1,394 | 0 |
| W. T. Gardner & Sons, Inc. | 1 | 2 | 8 | $1,560 | 0 |
| Atlantic Landscape Construction, Inc | 1 | 1 | 7 | $1,039 | 0 |
| Stockton Sand & Gravel | 1 | 2 | 3 | $445 | 0 |
| Gardner Road Company | 1 | 2 | 1 | $151 | 0 |
| Elwood Downs Incorporated | 1 | 3 | 0 | $0 | 0 |
| Hanson and Son Earth Works LLC | 1 | 1 | 0 | $0 | 0 |
| Town of Dexter Public Works | 1 | 2 | 0 | $0 | 0 |
Operators with the most citations in Penobscot County, Maine
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| B & C Sand and Gravel, Inc. | 2 | 4 | 61 | $15,292 | 0 |
| Sargent Corporation | 6 | 16 | 29 | $5,304 | 2 |
| Ha Higgins and Son Inc | 1 | 2 | 16 | $2,120 | 0 |
| Thornton Construction Inc | 4 | 5 | 13 | $1,851 | 0 |
| Eurovia Atlantic Coast LLC | 3 | 17 | 11 | $1,625 | 3 |
| Whitmore Contracting Inc. | 3 | 6 | 9 | $1,374 | 0 |
| Owen J Folsom Inc | 2 | 6 | 9 | $1,309 | 0 |
| Emery Lee & Sons Inc | 1 | 2 | 9 | $1,319 | 0 |
| Streets Landscape & Lawn Care Inc | 1 | 2 | 8 | $1,388 | 0 |
| Superior Crushing, Inc. | 1 | 3 | 8 | $1,394 | 0 |
| W. T. Gardner & Sons, Inc. | 1 | 2 | 8 | $1,560 | 0 |
| Atlantic Landscape Construction, Inc | 1 | 1 | 7 | $1,039 | 0 |
| Stockton Sand & Gravel | 1 | 2 | 3 | $445 | 0 |
| Gardner Road Company | 1 | 2 | 1 | $151 | 0 |
| Elwood Downs Incorporated | 1 | 3 | 0 | $0 | 0 |
| Hanson and Son Earth Works LLC | 1 | 1 | 0 | $0 | 0 |
| Town of Dexter Public Works | 1 | 2 | 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 |
|---|---|---|---|---|---|
| B & C Sand and Gravel, Inc. | B & C Sand and Gravel, Inc. | Penobscot County, ME | Construction sand and gravel | 2 | 36 |
| Etna Quarry | B & C Sand and Gravel, Inc. | Penobscot County, ME | Crushed, broken stone | 2 | 25 |
| Pioneer 3055 #810005 | Sargent Corporation | Penobscot County, ME | Crushed, broken stone | 8 | 21 |
| Portable Plant | Ha Higgins and Son Inc | Penobscot County, ME | Construction sand and gravel | 2 | 16 |
| Lee's Readi Mix | Emery Lee & Sons Inc | Penobscot County, ME | Construction sand and gravel | 2 | 9 |
| Gravel Pit-Thornton | Thornton Construction Inc | Penobscot County, ME | Construction sand and gravel | 4 | 8 |
| Portable Crushing Operation | Superior Crushing, Inc. | Penobscot County, ME | Construction sand and gravel | 3 | 8 |
| Passadumkeag Pit | Streets Landscape & Lawn Care Inc | Penobscot County, ME | Construction sand and gravel | 2 | 8 |
| Chip Mill Pit | W. T. Gardner & Sons, Inc. | Penobscot County, ME | Construction sand and gravel | 2 | 8 |
| Frink Pit | Whitmore Contracting Inc. | Penobscot County, ME | Construction sand and gravel | 2 | 7 |
| TC Gravel Springy Pond Pit | Atlantic Landscape Construction, Inc | Penobscot County, ME | Construction sand and gravel | 1 | 7 |
| Odlin Road Mill & Quarry | Eurovia Atlantic Coast LLC | Penobscot County, ME | Crushed, broken traprock | 12 | 6 |
| Greenbush Wash Plant | Owen J Folsom Inc | Penobscot County, ME | Construction sand and gravel | 3 | 6 |
| Queen City Quarry | Sargent Corporation | Penobscot County, ME | Construction sand and gravel | 2 | 5 |
| Astec 350 P212209 | Eurovia Atlantic Coast LLC | Penobscot County, ME | Crushed, broken stone | 2 | 4 |
| Portable Primary Pioneer 30X42 | Owen J Folsom Inc | Penobscot County, ME | Crushed, broken stone | 3 | 3 |
| Alton PMD | Stockton Sand & Gravel | Penobscot County, ME | Construction sand and gravel | 2 | 3 |
| Rental Screen/Various | Sargent Corporation | Penobscot County, ME | Construction sand and gravel | 2 | 2 |
| Pine Hill Quarry | Whitmore Contracting Inc. | Penobscot County, ME | Construction sand and gravel | 2 | 2 |
| Commander Screen Plant | Thornton Construction Inc | Penobscot County, ME | Construction sand and gravel | 0 | 2 |
| Jaw Crusher | Thornton Construction Inc | Penobscot County, ME | Construction sand and gravel | 0 | 2 |
| Astec Screen 214941 | Eurovia Atlantic Coast LLC | Penobscot County, ME | Construction sand and gravel | 3 | 1 |
| Ptbl Wash Plant # 800003 | Sargent Corporation | Penobscot County, ME | Construction sand and gravel | 2 | 1 |
| Keene Pit | Gardner Road Company | Penobscot County, ME | Construction sand and gravel | 2 | 1 |
| Chieftain Screen | Thornton Construction Inc | Penobscot County, ME | Construction sand and gravel | 1 | 1 |
| Rock Crusher | Elwood Downs Incorporated | Penobscot County, ME | Construction sand and gravel | 3 | 0 |
| Portable Rental Screen | Sargent Corporation | Penobscot County, ME | Construction sand and gravel | 2 | 0 |
| Portable Screen | Town of Dexter Public Works | Penobscot County, ME | Construction sand and gravel | 2 | 0 |
| Hampden Quarry | Whitmore Contracting Inc. | Penobscot County, ME | Crushed, broken stone | 2 | 0 |
| Hanson and Son Earth Works LLC | Hanson and Son Earth Works LLC | Penobscot County, ME | Construction sand and gravel | 1 | 0 |
| Rental/Portable Crusher | Sargent Corporation | Penobscot County, ME | Construction sand and gravel | 0 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 32 | 80% |
| Crushed, broken stone | 7 | 17.5% |
| Crushed, broken traprock | 1 | 2.5% |
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 | 47 | 5 | $6,350 | 0 |
| 2023 | 48 | 6 | $7,349 | 2 |
| 2024 | 57 | 14 | $11,974 | 1 |
| 2025 | 39 | 5 | $9,269 | 2 |
| 2026 | 30 | 11 | $4,634 | 0 |
Standards cited most at mines in Penobscot County, Maine
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 | 28 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 17 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 14 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.4201 | 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 | 7 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 5 |
| 30 CFR 46.6 | Training at sand, gravel and surface stone mines | 5 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.23002 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.1000 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 3 |
Injury and illness cases at mines in Penobscot County, Maine
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 | 1 |
What the accident reports at mines in Penobscot County, Maine describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 4 |
| Handtools (nonpowered) | 1 |
Equipment named in accident reports at mines in Penobscot County, Maine
| Equipment | Reports |
|---|---|
| Shovel | 1 |
| Hand tools (not powered) | 1 |
| Trucks | 1 |
| Bulldozer | 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.