Abandoned mines in Houghton County, Michigan

1. Mine openings

   shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
   96 31.7%
2. Mines and surface workings

   labelled mines, open pits, strip mines, placer and hydraulic workings
   75 24.8%
3. Quarries, gravel and borrow pits

   construction-material and industrial-mineral extraction
   53 17.5%
4. Dumps, tailings, spoil and gob

   what mining left above ground
   79 26.1%

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.

1. Centennial No 6 & 3

   Underground metal/non-metal · Michcan Copper Company Ltd · MSHA ID 2002827
   Abandoned 1991-07-15
2. CHAMPION #1 SHAFT

   Underground metal/non-metal · Mc Kana Mines & Minerals · MSHA ID 2002945
   Abandoned 2007-06-28
3. Extec 5000 Screen Plant

   Surface metal/non-metal · Hyrkas Gravel · MSHA ID 2003329
   Abandoned 2008-07-08
4. Gedvillas Pit

   Surface metal/non-metal · Schinella-Mottes Construction Company · MSHA ID 2002455
   Abandoned 1985-05-28
5. George Hocking Construction Company

   Surface metal/non-metal · George Hocking Construction Company · MSHA ID 2000607
   Abandoned 1979-06-13
6. Great Lakes Mineral #645 Rip Rap Plant

   Surface metal/non-metal · Valley View Quarry · MSHA ID 2003632
   Abandoned 2026-01-28
7. Haltunen Pit

   Surface metal/non-metal · Haltunen Sand & Gravel Inc · MSHA ID 2001807
   Abandoned 1985-04-26
8. HALTUNEN SAND & GRAVEL

   Surface metal/non-metal · Leroy Haltunen · MSHA ID 2002936
   Abandoned 1999-08-11
9. Houghton County Crushed Stone

   Surface metal/non-metal · George Hocking Construction Company · MSHA ID 2002247
   Abandoned 1985-08-23
10. Houghton County Sand & Gravel

    Surface metal/non-metal · George Hocking Construction Company · MSHA ID 2001197
    Abandoned 1992-07-30
11. Michigan Tech University Expermenta

    Underground metal/non-metal · Michigan Technological University · MSHA ID 2002271
    Abandoned 1982-05-21
12. No 6 Road Mine Waste Rock

    Facility metal/non-metal · Houghton County Road Commission · MSHA ID 2000267
    Abandoned 1979-08-30
13. Plant #2

    Surface metal/non-metal · George Hocking Construction Company · MSHA ID 2001196
    Abandoned 1993-06-11
14. Rob Roy Pit

    Surface metal/non-metal · A Lindberg & Sons Inc · MSHA ID 2002779
    Abandoned 1987-10-16
15. Screen Machine II

    Surface metal/non-metal · Harris Contracting · MSHA ID 2003298
    Abandoned 2012-05-11
16. Screen Plant #1

    Surface metal/non-metal · Ziemnick Excavating, Inc. · MSHA ID 2003603
    Abandoned 2022-05-24
17. WSG Sandvik Cone Crusher

    Surface metal/non-metal · WUEBBEN SAND & GRAVEL Inc · MSHA ID 2003651
    Abandoned 2025-10-30

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

• Tuscola County 512
• Kent County 405
• Menominee County 353
• Marquette County 290
• Saginaw County 237
• Sanilac County 235
• Montcalm County 232
• Washtenaw County 223
• Delta County 222
• Oakland County 221
• Mackinac County 207
• Alpena County 207

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.