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Abandoned mines › Maryland
Abandoned mine inventory

Abandoned mines in Prince George's County, Maryland

Prince George's County, Maryland has 314 mine and prospect features on USGS topographic maps published 1942–1993. MSHA's register carries 19 mines in the county with status Abandoned or Abandoned and Sealed.

Every mine and prospect feature the USGS digitized from historical topographic maps covering Prince George's County, every OSMRE abandoned mine land problem in the county, and every MSHA-registered mine here with status Abandoned. Named features are listed below; unnamed ones are counted by type. Locations are deliberately not shown: this page says what abandoned workings are in the county, not where to find them. They are dangerous and should not be entered.

Mapped mine features (USGS)
314
Mine openings
0
OSMRE problems unreclaimed
0
MSHA mines marked abandoned
19
0 features carry a name0 prospect pits16 quadrangle maps, published 1942–1993 0 MSHA mines abandoned and sealed
What the features are
  1. Mines and surface workings
    labelled mines, open pits, strip mines, placer and hydraulic workings
    145 46.2%
  2. Quarries, gravel and borrow pits
    construction-material and industrial-mineral extraction
    169 53.8%
MSHA-registered mines with status Abandoned19 on register
  1. Aggregate Industries-Div/Rockville Crush
    Surface metal/non-metal · Rockville Crushed Stone Inc · MSHA ID 1800296
    Abandoned
  2. Ammendale Pit & Plant
    Surface metal/non-metal · Ammendale Sand & Gravel Inc · MSHA ID 1800622
    Abandoned
  3. Bi-County Plant
    Surface metal/non-metal · E L Gardner Inc · MSHA ID 1800598
    Abandoned
  4. BRANCHVILLE
    Surface metal/non-metal · A H Smith Associates Limited Partnership · MSHA ID 1800275
    Abandoned
  5. BRANDYWINE PIT
    Surface metal/non-metal · Bardon Inc · MSHA ID 1800705
    Abandoned
  6. Contee Pit And Plant
    Surface metal/non-metal · Md-Va Sand Company · MSHA ID 1800675
    Abandoned
  7. Davis Sand & Gravel
    Surface metal/non-metal · A H Smith Associates Limited Partnership · MSHA ID 1800293
    Abandoned
  8. Eco-Rok Incorporated
    Surface metal/non-metal · Eco-Rok Inc · MSHA ID 1800564
    Abandoned
  9. Gudelsky Materials
    Surface metal/non-metal · Percontee Inc · MSHA ID 1800727
    Abandoned
  10. Jenkins Property
    Surface metal/non-metal · Maryland Natural Resource Solutions LLC · MSHA ID 1800792
    Abandoned
  11. Laurel Operation
    Surface metal/non-metal · Laurel Sand & Gravel Inc · MSHA ID 1800410
    Abandoned
  12. MERIT BRANDYWINE
    Surface metal/non-metal · Merit Concrete Incorporated · MSHA ID 1800481
    Abandoned
  13. MM & F
    Surface metal/non-metal · M M & F Inc · MSHA ID 1800743
    Abandoned
  14. Muirkirk Mine
    Surface metal/non-metal · Cherokee Sanford Brick · MSHA ID 1800078
    Abandoned
  15. Murikirk Pit
    Surface metal/non-metal · Cherry Hill Sand & Gravel Company Inc · MSHA ID 1800615
    Abandoned
  16. Prince Georges Bank Run
    Surface metal/non-metal · Prince Georges Bank Run Gravel Corp · MSHA ID 1800645
    Abandoned
  17. Sheriff Road Pit And Plant
    Surface metal/non-metal · Brandywine Sand & Gravel Company · MSHA ID 1800641
    Abandoned
  18. Silver Hill Plant & Various Pits
    Surface metal/non-metal · Silver Hill Aggregates Limited Partnership · MSHA ID 1800320
    Abandoned
  19. Truman Pit
    Surface metal/non-metal · Forestville Asphalt Company · MSHA ID 1800717
    Abandoned

Status and date are as reported to MSHA by the operator. Each mine's own page carries its accident, citation and inspection record.

By source vocabularythe publishers' own terms
Feature type Features
Disturbed Surface 110
Gravel Pit 52
Gravel Pit 29
Gravel/Borrow Pit - Undifferentiated 22
Sand and Gravel Pit 20
Gravel/Borrow Pit - Undifferentiated 17
Open Pit Mine or Quarry 16
Disturbed Surface - Pit 15
Sand and Gravel Pit 13
Sand Pit 8
Open Pit Mine or Quarry 4
Borrow Pit 3
Clay Pit 3
Borrow Pit 2
Other counties in MarylandAll counties →
How to read these numbers

A USGS feature is a symbol on a historical topographic map, there when the map was surveyed; it may since have been sealed, reclaimed, built over or reopened as a working mine, and the map does not say which. An OSMRE row is a problem the abandoned mine land program tracks, not a mine. An MSHA mine is a registered operation whose operator reported abandonment, a record that starts in the 1970s. The three overlap and are never added together. The county is assigned from each feature's coordinates against the Census 2023 county boundaries. The full method is on the national page.

Sources
  1. USGS, Consolidated Prospect- and Mine-Related Features from 7.5- and 15-Minute Topographic Quadrangle Maps of the United States (USMIN)
    597,612 point and area features digitized from about 106,350 historical topographic maps published 1886–2006; public domain (CC0). A feature is a map symbol, not a field-verified site, and the map does not say whether it was still worked.
  2. USGS Fact Sheet 2025–3003, The Abandoned Mine Inventory of the United States
    States that as of 2025 there is no comprehensive national inventory of abandoned mine features, and that the detailed national database now being built will not be published.
  3. OSMRE, Abandoned Mine Land Inventory System (e-AMLIS), public Problems layer
    One row per abandoned mine land problem in a problem area, with its type, funding program and reclamation status; mostly coal mined before the 1977 Surface Mining Control and Reclamation Act. Coordinates are the problem area's.
  4. MSHA, Mines dataset (Mine Data Retrieval System)
    Every mine registered with MSHA since the 1970s; a mine reads Abandoned or Abandoned and Sealed when its operator reported that status. Refreshed weekly.
  5. US Census Bureau, 2023 cartographic county boundaries (1:500,000)
    Each feature's county is assigned by its coordinates against these boundaries, not copied from the source file.
  6. GAO-20-238, Abandoned Hardrock Mines (March 2020)
    Federal agencies had identified at least 140,000 abandoned hardrock mine features on federal land and estimated more than 390,000 more not yet captured in their databases.
  7. Abandoned Hardrock Mine Reclamation (AHMR) Program, US Department of the Interior
    The program the USGS inventory is compiled for. Its appropriations and the 674,000 field-confirmed feature count on this page were provided by the program manager, Office of Environmental Policy and Compliance, and are cited with permission (2026-09-08).
  8. IMCC-NAAMLP Hardrock AML Report
    Page 48 carries the two figures this page leans on: USGS estimates 633,181 of the 725,690 mine features it recorded from historic topographic maps, 87 percent, are hardrock; and state and federal agencies have submitted more than 724,000 AML features to the national database being built, already more than the historic maps hold. Year-by-year AHMR funding is on page 35.