Abandoned mines in Ketchikan Gateway Borough, Alaska

1. Mine openings

   shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
   21 11.9%
2. Mines and surface workings

   labelled mines, open pits, strip mines, placer and hydraulic workings
   7 4.0%
3. Quarries, gravel and borrow pits

   construction-material and industrial-mineral extraction
   149 84.2%

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.

Problem types carry OSMRE's priority prefix: P1 and P2 are threats to health, safety and property, P3 is environmental. A problem area is a cluster of problems reclaimed as one project; several rows can share one location.

1. Bingham Crusher

   Surface metal/non-metal · Secon · MSHA ID 5001601
   Abandoned 2024-10-01
2. Control Lake Quarry

   Surface metal/non-metal · Wayne Construction Company · MSHA ID 5001494
   Abandoned 1993-07-22
3. Gellings & Lewis

   Surface metal/non-metal · Gellings & Lewis · MSHA ID 5001497
   Abandoned 1987-03-20
4. Hardrock Quarry

   Surface metal/non-metal · Hardrock Construction Company · MSHA ID 5001264
   Abandoned 1992-03-24
5. Ketchikan Ready Mix Crusher

   Surface metal/non-metal · Ketchikan Ready Mix & Quarry Inc · MSHA ID 5000345
   Abandoned 2010-10-10
6. Niblack Project LLC

   Underground metal/non-metal · Niblack Project LLC · MSHA ID 5001857
   Abandoned 2024-10-01
7. Pegson Portable

   Surface metal/non-metal · Bicknell Inc · MSHA ID 5001826
   Abandoned 2009-06-29
8. Pool Engineering Rock Pit

   Surface metal/non-metal · Pool Engineering Inc · MSHA ID 5002100
   Abandoned 2024-10-01
9. R B Quarry

   Surface metal/non-metal · R B Construction · MSHA ID 5001518
   Abandoned 1994-09-07
10. S C Portable Crusher #2 Pioneer Roll

    Surface metal/non-metal · South Coast Inc · MSHA ID 5001553
    Abandoned 1994-05-10
11. S C Portable Crusher #3 Impact

    Surface metal/non-metal · South Coast Inc · MSHA ID 5001554
    Abandoned 1992-04-16
12. South Coast Incorporated

    Surface metal/non-metal · South Coast Inc · MSHA ID 5001552
    Abandoned 2003-07-24

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

• Prince of Wales-Hyder Census Area 1,316
• Fairbanks North Star Borough 617
• Matanuska-Susitna Borough 441
• Anchorage Municipality 348
• Kenai Peninsula Borough 342
• Juneau City and Borough 281
• Yukon-Koyukuk Census Area 239
• Nome Census Area 200
• Wrangell City and Borough 191
• Hoonah-Angoon Census Area 185
• Chugach Census Area 173
• Petersburg Borough 131

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.