Data / Mines / Maine / Mount Holly
Mount Holly, Washington County, Maine: 0 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Mount Holly is an intermittent crushed, broken limestone surface mine in Washington County, Maine, operated by Richard Mingo Construction, Inc. with 1 employee on MSHA's record (mine ID 1701190). Since January 1, 2022 MSHA inspectors issued 0 citations and orders there with $0 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Mount Holly (MSHA mine ID 1701190) in Washington County, Maine: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 1701190
- Status
- Intermittent since August 21, 2026
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Washington County, Maine
- Nearest town
- Calais
- Operator
- Richard Mingo Construction, Inc.
- Employees
- 1
- MSHA field office
- Portsmouth NH Field Office
- Citations and orders since January 1, 2022
- 0
- Inspections
- 0
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
Other open mines in Washington County, Maine
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Englishmen's Bay Quarry | J.C. Stone Inc. | Washington County, ME | Dimension stone | 2 | 22 |
| Dorr Pit and Mill | County Concrete & Construction CO Inc | Washington County, ME | Construction sand and gravel | 3 | 21 |
| Spears Pit | Wayne L Spear & Son Inc | Washington County, ME | Construction sand and gravel | 2 | 7 |
| Pennknife Pit | Stanhope Trucking LLC | Washington County, ME | Construction sand and gravel | 3 | 4 |
| Peasley Pit | Eurovia Atlantic Coast LLC | Washington County, ME | Construction sand and gravel | 1 | 2 |
| Jonesboro Red Quarry | J.C. Stone Inc. | Washington County, ME | Dimension stone | 0 | 1 |
| Red Gate Gravel | Hallowell Construction | Washington County, ME | Construction sand and gravel | 3 | 0 |
| Washington County Plant | Sargent Corporation | Washington County, ME | Construction sand and gravel | 2 | 0 |
| Charlotte Quarry | Eurovia Atlantic Coast LLC | Washington County, ME | Crushed, broken stone | 2 | 0 |
| Donovan Construction | Donovan Construction | Washington County, ME | Construction sand and gravel | 2 | 0 |
| Oak Hill | Morgan Construction | Washington County, ME | Construction sand and gravel | 1 | 0 |
| Charlotte Pit | Stanhope Trucking LLC | Washington County, ME | Construction sand and gravel | 1 | 0 |
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.