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Abandoned mines › New Hampshire
Abandoned mine inventory

Abandoned mines in Grafton County, New Hampshire

Grafton County, New Hampshire has 287 mine and prospect features on USGS topographic maps published 1927–1998, including 6 mine openings (shafts, adits and air shafts); 4 of the features carry a name on the map. MSHA's register carries 26 mines in the county with status Abandoned or Abandoned and Sealed.

Every mine and prospect feature the USGS digitized from historical topographic maps covering Grafton 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)
287
Mine openings
6
OSMRE problems unreclaimed
0
MSHA mines marked abandoned
26
4 features carry a name0 prospect pits40 quadrangle maps, published 1927–1998 0 MSHA mines abandoned and sealed
What the features are
  1. Mine openings
    shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
    6 2.1%
  2. Mines and surface workings
    labelled mines, open pits, strip mines, placer and hydraulic workings
    30 10.5%
  3. Quarries, gravel and borrow pits
    construction-material and industrial-mineral extraction
    251 87.5%
Named features on the maps4 named · from the USGS compilation
Name on map Feature
Alexandria Mica Mine Open Pit Mine
Mica Mine Open Pit Mine
Mica Mine Open Pit Mine
Mica Mine Open Pit Mine

A name is the label printed beside the symbol on the map. "First mapped" is the earliest topographic edition that shows the symbol, which bounds the feature's age from above; it is not the date it was worked. Unnamed features (most prospect pits, adits and shafts carry no label) are in the counts above but not this list.

MSHA-registered mines with status Abandoned26 on register
  1. 49 Pit
    Surface metal/non-metal · Jim Sanborn & Sons · MSHA ID 2700473
    Abandoned
  2. Advanced Aggregate Materials Corp
    Surface metal/non-metal · Advanced Aggregate Materials Corp · MSHA ID 2700409
    Abandoned
  3. Amos Locke Pit
    Surface metal/non-metal · Littleton Gravel Co. Inc · MSHA ID 2700344
    Abandoned
  4. Blaisdell Sand & Gravel
    Surface metal/non-metal · Blaisdell Sand & Gravel · MSHA ID 2700358
    Abandoned
  5. Bog Rd Pit
    Surface metal/non-metal · Donald A Crate & Evelyn J Crate · MSHA ID 2700385
    Abandoned
  6. Campton Sand & Gravel C616
    Surface metal/non-metal · Pike Industries Inc · MSHA ID 2700052
    Abandoned
  7. CEC Roadrunner 400 Series Portable Jaw
    Surface metal/non-metal · Presby Construction Inc. · MSHA ID 2700432
    Abandoned
  8. ENFIELD GRANITE CO.
    Surface metal/non-metal · Enfield Granite Company · MSHA ID 2700288
    Abandoned
  9. Extec Robotrac Portable Screen
    Surface metal/non-metal · Presby Construction Inc. · MSHA ID 2700478
    Abandoned
  10. F. C. HAMMOND & SON
    Surface metal/non-metal · F C Hammond & Son Lumber Company · MSHA ID 2700351
    Abandoned
  11. Finlaid Pit
    Surface metal/non-metal · William Presby · MSHA ID 2700238
    Abandoned
  12. FRENCH POND CRUSHING, INC.
    Surface metal/non-metal · French Pond Crushing Inc · MSHA ID 2700239
    Abandoned
  13. LANDRY PIT
    Surface metal/non-metal · Joseph A Landry Iii · MSHA ID 2700324
    Abandoned
  14. LATULIPPE PORT. PLANT
    Surface metal/non-metal · Latulippe Excavating · MSHA ID 2700337
    Abandoned
  15. Nordberg Portable Crusher C-653
    Surface metal/non-metal · Pike Industries Inc. · MSHA ID 2700374
    Abandoned
  16. Orford Pit And Plant
    Surface metal/non-metal · Orford Sand & Stone · MSHA ID 2700211
    Abandoned
  17. Portable Crushing Plant #1
    Surface metal/non-metal · Andrews Construction Company Inc · MSHA ID 2700428
    Abandoned
  18. Portable Plant
    Surface metal/non-metal · L A Guaraldi-Div/Bond Optics Inc · MSHA ID 2700220
    Abandoned
  19. Portable Plant
    Surface metal/non-metal · Woodstock Sand and Gravel · MSHA ID 2700472
    Abandoned
  20. RT. 12A SAND & GRAVEL
    Surface metal/non-metal · Rt 12a Sand & Gravel · MSHA ID 2700323
    Abandoned
  21. Rumney Sand & Gravel
    Surface metal/non-metal · Rumney Sand & Gravel · MSHA ID 2700321
    Abandoned
  22. THORNTON PIT
    Surface metal/non-metal · Robert C Whitehouse & Son · MSHA ID 2700265
    Abandoned
  23. Tilton Pit
    Surface metal/non-metal · Clinton Clough Construction Inc. · MSHA ID 2700458
    Abandoned
  24. Town Pit
    Surface metal/non-metal · Town Of Lisbon · MSHA ID 2700237
    Abandoned
  25. TWIN STATE SAND & GRAVEL CO., INC.
    Surface metal/non-metal · Twin State Sand & Gravel Company Inc · MSHA ID 2700070
    Abandoned
  26. West Lebanon Pit
    Surface metal/non-metal · J A Landry & Sons Inc · MSHA ID 2700212
    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
Gravel Pit 119
Sand Pit 50
Gravel Pit 28
Sand Pit 18
Gravel/Borrow Pit - Undifferentiated 13
Gravel/Borrow Pit - Undifferentiated 12
Open Pit Mine or Quarry 10
Disturbed Surface 7
Open Pit Mine 6
Open Pit Mine 6
Adit 5
Quarry 5
Sand and Gravel Pit 3
Sand and Gravel Pit 2
Clay Pit 1
Mine Shaft 1
Open Pit Mine or Quarry 1
Other counties in New HampshireAll 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.