Mining Incidents
Search Operators Mines Alerts Research Controllers Fatalgrams About
Countries
Peru Chile
English Español
Abandoned mines › New Hampshire
Abandoned mine inventory

Abandoned mines in Hillsborough County, New Hampshire

Hillsborough County, New Hampshire has 535 mine and prospect features on USGS topographic maps published 1953–1998. MSHA's register carries 37 mines in the county with status Abandoned or Abandoned and Sealed.

Every mine and prospect feature the USGS digitized from historical topographic maps covering Hillsborough 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)
535
Mine openings
0
OSMRE problems unreclaimed
0
MSHA mines marked abandoned
37
0 features carry a name0 prospect pits28 quadrangle maps, published 1953–1998 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
    132 24.7%
  2. Quarries, gravel and borrow pits
    construction-material and industrial-mineral extraction
    403 75.3%
MSHA-registered mines with status Abandoned37 on register
  1. Boisvert'S Pit
    Surface metal/non-metal · W Boisvert & Sons Inc · MSHA ID 2700272
    Abandoned
  2. Brookline Pit 1
    Surface metal/non-metal · Lombardo Loam & Gravel · MSHA ID 2700538
    Abandoned
  3. CSSI-12
    Surface metal/non-metal · CSSI Contractors · MSHA ID 2700474
    Abandoned
  4. Don Wheeler Construction
    Surface metal/non-metal · Don Wheeler Construction Inc · MSHA ID 2700540
    Abandoned
  5. DUCHARME SAND & GRAVEL INC.
    Surface metal/non-metal · Ducharme Sand & Gravel Inc · MSHA ID 2700135
    Abandoned
  6. E & C TOWNES GRAVEL PIT
    Surface metal/non-metal · Townes Excavating Corp · MSHA ID 2700353
    Abandoned
  7. EARTHWORKS PORTABLE CRUSHER
    Surface metal/non-metal · Earthworks Inc · MSHA ID 2700342
    Abandoned
  8. Groton Road Pit
    Surface metal/non-metal · Wholesale Manufacturing Inc · MSHA ID 2700233
    Abandoned
  9. HILLSBORO SAND & GRAVEL LLC
    Surface metal/non-metal · LEMAY EXCAVATION INC. · MSHA ID 2700423
    Abandoned
  10. Kitledge Granite Quarry
    Facility metal/non-metal · Kitledge Granite Corp · MSHA ID 2700096
    Abandoned
  11. LB Smith Screening Plant
    Surface metal/non-metal · Quinn Brothers Corporation · MSHA ID 2700495
    Abandoned
  12. Leighton A White Inc Quarry
    Surface metal/non-metal · Leighton A White Inc · MSHA ID 2700506
    Abandoned
  13. MANCHESTER PLANT
    Surface metal/non-metal · AGGREGATE INDUSTRIES NORTHEAST REGION · MSHA ID 2700057
    Abandoned
  14. McCloskey 512RG Trommel
    Surface metal/non-metal · Leighton A White Inc · MSHA ID 2700557
    Abandoned
  15. Milford Location
    Surface metal/non-metal · Northeast Sand and Gravel LLC · MSHA ID 2700507
    Abandoned
  16. Milford Pit And Mill
    Surface metal/non-metal · Ryder Concrete Inc · MSHA ID 2700131
    Abandoned
  17. Milford Pit And Mill No 4
    Surface metal/non-metal · X-Orb Of N H Corp · MSHA ID 2700213
    Abandoned
  18. Mill Steel Corp
    Surface metal/non-metal · Mill Steel Corp · MSHA ID 2700498
    Abandoned
  19. Nashua N H Plant
    Surface metal/non-metal · Brox Industries Inc · MSHA ID 2700065
    Abandoned
  20. New Boston Land Company
    Surface metal/non-metal · New Boston Land Company · MSHA ID 2700281
    Abandoned
  21. NEW BOSTON PIT
    Surface metal/non-metal · AGGREGATE INDUSTRIES NORTHEAST REGION · MSHA ID 2700336
    Abandoned
  22. New Ipswich Pit
    Surface metal/non-metal · Pitcherville Sand and Gravel Inc. · MSHA ID 2700470
    Abandoned
  23. PETERBOROUGH
    Surface metal/non-metal · Hanson Construction Company · MSHA ID 2700311
    Abandoned
  24. PICHETTE PORTABLE CRUSHER NO. 1
    Surface metal/non-metal · Pichette Brothers Construction Company Inc · MSHA ID 2700285
    Abandoned
  25. Pike Industries Inc C628
    Surface metal/non-metal · Pike Industries Inc · MSHA ID 2700132
    Abandoned
  26. Portable #1
    Surface metal/non-metal · Thibeault Corp Of New Hampshire · MSHA ID 2700279
    Abandoned
  27. Portable #1
    Surface metal/non-metal · John A Brown Excavating · MSHA ID 2700280
    Abandoned
  28. PORTABLE PLANT
    Surface metal/non-metal · ARELAS, LLC · MSHA ID 2700372
    Abandoned
  29. PORTABLE PLANT #1
    Surface metal/non-metal · Hudson Sand & Gravel Inc · MSHA ID 2700278
    Abandoned
  30. PORTABLE UNIT
    Surface metal/non-metal · Ivar Martin · MSHA ID 2700287
    Abandoned
  31. PORTABLE UNIT
    Surface metal/non-metal · Chris Flecchia · MSHA ID 2700301
    Abandoned
  32. PORTABLE UNIT #3
    Surface metal/non-metal · C J Bolton Inc · MSHA ID 2700339
    Abandoned
  33. Portable Unit 4
    Surface metal/non-metal · C J Bolton Inc · MSHA ID 2700407
    Abandoned
  34. Riverdale Sand & Gravel
    Surface metal/non-metal · Riverdale Sand & Gravel Inc · MSHA ID 2700270
    Abandoned
  35. Riverside Paving & Excavating Incorporat
    Surface metal/non-metal · Riverside Paving & Excavating Inc · MSHA ID 2700241
    Abandoned
  36. Route 111a Pit
    Surface metal/non-metal · Keith Construction Inc · MSHA ID 2700236
    Abandoned
  37. Telsmith
    Surface metal/non-metal · Pitcherville Sand & Gravel · MSHA ID 1901085
    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 174
Disturbed Surface 124
Gravel/Borrow Pit - Undifferentiated 71
Sand Pit 62
Sand Pit 41
Gravel Pit 30
Quarry 14
Gravel/Borrow Pit - Undifferentiated 7
Open Pit Mine or Quarry 6
Sand and Gravel Pit 3
Open Pit Mine or Quarry 2
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.