Abandoned mines in Boise County, Idaho

1. Mine openings

   shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
   110 31.2%
2. Prospect pits and trenches

   shallow exploration diggings that never became a mine
   172 48.7%
3. Mines and surface workings

   labelled mines, open pits, strip mines, placer and hydraulic workings
   21 5.9%
4. Quarries, gravel and borrow pits

   construction-material and industrial-mineral extraction
   7 2.0%
5. Dumps, tailings, spoil and gob

   what mining left above ground
   43 12.2%

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. Abella

   Underground metal/non-metal · Roger Smith-Drilling Inc · MSHA ID 1001346
   Abandoned 1981-04-15
2. Abella

   Underground metal/non-metal · Abella Resources Ltd · MSHA ID 1001416
   Abandoned 1981-04-15
3. Abella

   Underground metal/non-metal · Mining Corp Inc · MSHA ID 1001417
   Abandoned 1980-05-21
4. Banner Mine

   Underground metal/non-metal · National Resources Corp · MSHA ID 1001302
   Abandoned 1985-04-29
5. Basin Rock

   Surface metal/non-metal · Basin Rock · MSHA ID 1002205
   Abandoned 2011-08-10
6. Black Bart Mine

   Surface metal/non-metal · Black Bart Mining Company · MSHA ID 1001575
   Abandoned 1982-08-30
7. Buckskin Mine

   Surface metal/non-metal · Forrex Mining Company · MSHA ID 1001099
   Abandoned 1982-08-16
8. Comeback Mine

   Facility metal/non-metal · Diamond Hill Mining Company · MSHA ID 1000134
   Abandoned 1987-04-08
9. Gardner Construction

   Surface metal/non-metal · Gardner Construction · MSHA ID 1002166
   Abandoned 2009-07-08
10. Gold Hill

    Surface metal/non-metal · Idaho State Gold Company · MSHA ID 1002209
    Abandoned 2015-08-10
11. Gold Hill Gravel

    Surface metal/non-metal · Gold Hill Gravel · MSHA ID 1002027
    Abandoned 2003-06-17
12. Gold Hill Mine

    Surface metal/non-metal · Quartzburg Mining Co · MSHA ID 1000673
    Abandoned 1978-11-22
13. Grimes Pass Mines

    Surface metal/non-metal · Roscoe Dodge · MSHA ID 1001115
    Abandoned 1980-07-07
14. Hayne Mill

    Facility metal/non-metal · Hayne Mining & Exploration Ltd · MSHA ID 1001592
    Abandoned 1983-10-27
15. Hell or High Water Mining Placer

    Surface metal/non-metal · Hell or High Water Mining Corporation · MSHA ID 1002167
    Abandoned 2009-09-01
16. Job 101 Pit

    Surface metal/non-metal · Boise Paving & Asphalt Company · MSHA ID 1001599
    Abandoned 1983-01-21
17. Lost Mind

    Surface metal/non-metal · Redneck Mining Associates · MSHA ID 1002224
    Abandoned 2013-06-05
18. Miller Mountain No 1

    Underground metal/non-metal · Miller Mountain Mine · MSHA ID 1001369
    Abandoned 1979-04-12
19. Missouri Mine

    Underground metal/non-metal · Mobil Energy & Mining · MSHA ID 1000774
    Abandoned 1982-06-07
20. Nellie Mine

    Underground metal/non-metal · Nellie Mine Inc · MSHA ID 1001573
    Abandoned 1984-05-08
21. Nelson

    Surface metal/non-metal · Boise Gravel Co · MSHA ID 1002101
    Abandoned 2013-02-28
22. Olsen

    Surface metal/non-metal · Olsen · MSHA ID 1002236
    Abandoned 2016-12-19
23. Rathhoff Pit

    Surface metal/non-metal · Mr Rathhoff · MSHA ID 1001496
    Abandoned 1980-09-30
24. S Africa #1

    Underground metal/non-metal · Carlin Brothers Mining · MSHA ID 1001733
    Abandoned 1988-07-11
25. Silver Bar Mine

    Underground metal/non-metal · Paychute Enterprises Trust · MSHA ID 1001391
    Abandoned 1987-08-12
26. Specimen Mine

    Surface metal/non-metal · United States Antimony Corp · MSHA ID 1001847
    Abandoned 1990-07-18
27. Sunset Mine

    Underground metal/non-metal · Sunset Mining & Development Corp · MSHA ID 1001522
    Abandoned 1982-08-24
28. Ten Mile Bridge Pit

    Surface metal/non-metal · Quinn-Robbins Company Inc · MSHA ID 1001005
    Abandoned 1980-10-27
29. Ternan Belshazzar Mine

    Underground metal/non-metal · Ternan Belshazzar Mines Inc · MSHA ID 1000430
    Abandoned 1981-01-26
30. Treasure Valley Mine

    Surface metal/non-metal · Treasure Valley Mining Inc · MSHA ID 1001254
    Abandoned 1982-08-16
31. Walker-Mc Reynolds Ophir Creek

    Surface metal/non-metal · Walker-Mc Reynolds Ophir Creek · MSHA ID 1001716
    Abandoned 1989-06-08
32. White Rose Sand & Gravel

    Surface metal/non-metal · White Rose Corp · MSHA ID 1001372
    Abandoned 1981-04-23

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

• Shoshone County 2,127
• Lemhi County 1,932
• Blaine County 1,606
• Owyhee County 1,364
• Custer County 1,282
• Idaho County 888
• Butte County 661
• Bonner County 412
• Valley County 389
• Elmore County 345
• Adams County 298
• Cassia County 274

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.