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

Abandoned mines in Westchester County, New York

Westchester County, New York has 50 mine and prospect features on USGS topographic maps published 1932–1981; 3 of the features carry a name on the map. MSHA's register carries 11 mines in the county with status Abandoned or Abandoned and Sealed.

Every mine and prospect feature the USGS digitized from historical topographic maps covering Westchester 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)
50
Mine openings
0
OSMRE problems unreclaimed
0
MSHA mines marked abandoned
11
3 features carry a name0 prospect pits11 quadrangle maps, published 1932–1981 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
    19 38.0%
  2. Quarries, gravel and borrow pits
    construction-material and industrial-mineral extraction
    31 62.0%
Named features on the maps3 named · from the USGS compilation
Name on map Feature
Emery Mines Open Pit Mine
Emery Mines Open Pit Mine area
Emery Mines 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 Abandoned11 on register
  1. 37 CROTON DAM ROAD
    Surface metal/non-metal · 37 Croton Dam Road Corp · MSHA ID 3001262
    Abandoned
  2. Armonk Plant
    Surface metal/non-metal · Stone Age Humus Corp · MSHA ID 3000622
    Abandoned
  3. BEDROCK INDUSTRIES
    Surface metal/non-metal · Anthony L Fiorito Inc · MSHA ID 3003333
    Abandoned
  4. Big John Mine
    Surface metal/non-metal · Empire Emery Mining Corp · MSHA ID 3001710
    Abandoned
  5. Buchanan Plant
    Facility metal/non-metal · Georgia Pacific Corp · MSHA ID 3001900
    Abandoned
  6. Lake Street Granite Quarry
    Surface metal/non-metal · Lake Street Granite Quarry · MSHA ID 3003681
    Abandoned
  7. LAKE STREET GRANITE QUARRY
    Surface metal/non-metal · Lake Street Granite Quarry Inc · MSHA ID 3000067
    Abandoned
  8. Oregon Road Pit
    Surface metal/non-metal · Dam-Fino Construction Company Inc · MSHA ID 3001994
    Abandoned
  9. Portable Pegson 1300
    Surface metal/non-metal · Custom Crushing & Materials Inc. · MSHA ID 3003467
    Abandoned
  10. Salt Hill Quarry
    Surface metal/non-metal · Briarcliff Associates Inc · MSHA ID 3000641
    Abandoned
  11. Somers Pit And Mill
    Surface metal/non-metal · Kipp Brothers Inc · MSHA ID 3001523
    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 17
Open Pit Mine or Quarry 8
Disturbed Surface 7
Sand Pit 3
Gravel/Borrow Pit - Undifferentiated 3
Quarry 3
Sand Pit 2
Gravel Pit 2
Open Pit Mine 2
Open Pit Mine 1
Quarry - Rock 1
Open Pit Mine or Quarry 1
Other counties in New YorkAll 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.