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Abandoned mines › Minnesota
Abandoned mine inventory

Abandoned mines in Clay County, Minnesota

Clay County, Minnesota has 185 mine and prospect features on USGS topographic maps published 1952–1981. MSHA's register carries 30 mines in the county with status Abandoned or Abandoned and Sealed.

Every mine and prospect feature the USGS digitized from historical topographic maps covering Clay 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)
185
Mine openings
0
OSMRE problems unreclaimed
0
MSHA mines marked abandoned
30
0 features carry a name0 prospect pits12 quadrangle maps, published 1952–1981 0 MSHA mines abandoned and sealed
What the features are
  1. Quarries, gravel and borrow pits
    construction-material and industrial-mineral extraction
    185 100.0%
MSHA-registered mines with status Abandoned30 on register
  1. AMERICAN DRAGLINE P-68
    Surface metal/non-metal · Camas Minndak Inc · MSHA ID 2103114
    Abandoned
  2. BREEZY POINT
    Surface metal/non-metal · Aggregate Industries, Inc. · MSHA ID 2103202
    Abandoned
  3. Clay County Felton Pit
    Surface metal/non-metal · Fitzgerald Construction Company · MSHA ID 2102709
    Abandoned
  4. Cone Crusher W/Screen P-116
    Surface metal/non-metal · Holcim - MWR, Inc. · MSHA ID 2102755
    Abandoned
  5. CONE CRUSHER/WASH PLANT P-91
    Surface metal/non-metal · Camas Minndak Inc · MSHA ID 2102436
    Abandoned
  6. Felton Pit
    Surface metal/non-metal · Northern Improvement Company · MSHA ID 2102830
    Abandoned
  7. Felton Pit
    Surface metal/non-metal · Donarski Brothers Inc · MSHA ID 2102872
    Abandoned
  8. Felton Plant
    Surface metal/non-metal · Aggregate Industries-North Central Region Inc · MSHA ID 2100548
    Abandoned
  9. Friday Pit & Mill
    Surface metal/non-metal · Duininck Brothers & Gilchrist · MSHA ID 2102771
    Abandoned
  10. Glyndon Sand And Gravel Pit
    Surface metal/non-metal · Ames Sand & Gravel Inc · MSHA ID 2100454
    Abandoned
  11. Grant Pit And Mill
    Surface metal/non-metal · William Collins Inc · MSHA ID 2100719
    Abandoned
  12. Ikel Pit & Mill
    Surface metal/non-metal · Ikel Sand & Gravel Inc · MSHA ID 2102515
    Abandoned
  13. Kenneth And David Sogn
    Surface metal/non-metal · Kenneth & David Sogn · MSHA ID 2102440
    Abandoned
  14. Kost Pit No 1
    Surface metal/non-metal · Kost Brothers Inc · MSHA ID 2102828
    Abandoned
  15. Langrud Pit
    Surface metal/non-metal · William Schultz Construction Company Inc · MSHA ID 2102688
    Abandoned
  16. Leach Pit
    Surface metal/non-metal · Ikel Sand & Gravel Inc · MSHA ID 2102576
    Abandoned
  17. LJ-SCREEN PLANT E-6
    Surface metal/non-metal · Camas Minndak Inc · MSHA ID 2103115
    Abandoned
  18. Mattson Pit
    Surface metal/non-metal · Ulven Gravel Company Inc · MSHA ID 2100636
    Abandoned
  19. Mineral Resource Pit
    Surface metal/non-metal · Ames Sand & Gravel Inc · MSHA ID 2102575
    Abandoned
  20. Olness Pit
    Surface metal/non-metal · Hubert Oye & Sons Inc · MSHA ID 2101291
    Abandoned
  21. Ottertail Aggregate
    Surface metal/non-metal · Aggregate Industries - NCR Inc · MSHA ID 2102954
    Abandoned
  22. Plant P-91
    Surface metal/non-metal · Aggregate Industries - MWR, Inc. · MSHA ID 2103226
    Abandoned
  23. Portable Crusher #1
    Surface metal/non-metal · Holcim - MWR, Inc. · MSHA ID 2103173
    Abandoned
  24. Portable Plant
    Surface metal/non-metal · Ulven Gravel Company Inc · MSHA ID 2102708
    Abandoned
  25. Quick Pit & Mill Or Quick Pit
    Surface metal/non-metal · William Collins Inc · MSHA ID 2102642
    Abandoned
  26. Reed Screen P-187
    Surface metal/non-metal · Holcim - MWR, Inc. · MSHA ID 2103257
    Abandoned
  27. Rock & Rip Rap
    Surface metal/non-metal · Dunham Gravel Inc · MSHA ID 2103491
    Abandoned
  28. Stock Pit
    Surface metal/non-metal · Dirt Dynamics, LLC · MSHA ID 2104021
    Abandoned
  29. Thompsen Pit
    Surface metal/non-metal · Leon Joyce Construction · MSHA ID 2102789
    Abandoned
  30. Titan Power Screen
    Surface metal/non-metal · Holcim - MWR, Inc. · MSHA ID 2103634
    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 139
Gravel Pit 42
Sand Pit 4
Other counties in MinnesotaAll 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.