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Abandoned mines › Oregon
Abandoned mine inventory

Abandoned mines in Multnomah County, Oregon

Multnomah County, Oregon has 85 mine and prospect features on USGS topographic maps published 1914–1997; 6 of the features carry a name on the map. MSHA's register carries 32 mines in the county with status Abandoned or Abandoned and Sealed.

Every mine and prospect feature the USGS digitized from historical topographic maps covering Multnomah 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)
85
Mine openings
0
OSMRE problems unreclaimed
0
MSHA mines marked abandoned
32
6 features carry a name0 prospect pits20 quadrangle maps, published 1914–1997 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
    14 16.5%
  2. Quarries, gravel and borrow pits
    construction-material and industrial-mineral extraction
    71 83.5%
Named features on the maps6 named · from the USGS compilation
Name on map Feature
Chitwood Quarry Quarry
Mound Quarry Quarry
Porters Point Quarry Quarry
Rocky Point Quarry
Southside Quarry Quarry
Windy Quarry Quarry

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 Abandoned32 on register
  1. ANGELL BROS INC
    Surface metal/non-metal · Angell Brothers Inc · MSHA ID 3500910
    Abandoned
  2. Angell Quarry
    Surface metal/non-metal · Knife River Corporation - Northwest · MSHA ID 3503465
    Abandoned
  3. City Pit 1525 Trs
    Surface metal/non-metal · U S Forest Service · MSHA ID 3501341
    Abandoned
  4. Columbia Sand & Gravel
    Surface metal/non-metal · Columbia Sand & Gravel Company · MSHA ID 3500471
    Abandoned
  5. Corbett Quarry
    Surface metal/non-metal · Heritage Rock LLC · MSHA ID 3503560
    Abandoned
  6. De Atley Co-Plant #3
    Surface metal/non-metal · De Atley Company Inc · MSHA ID 3500597
    Abandoned
  7. Downtown Plant
    Surface metal/non-metal · Lone Star Northwest · MSHA ID 3500708
    Abandoned
  8. Empco Plant
    Surface metal/non-metal · Excavated Materials Processing Company · MSHA ID 3503110
    Abandoned
  9. Fir Station Pit
    Surface metal/non-metal · Porter W Yett Company · MSHA ID 3500600
    Abandoned
  10. Gresham Clay Mine
    Surface metal/non-metal · Mutual Materials Company · MSHA ID 3500233
    Abandoned
  11. L T Crusher #1
    Surface metal/non-metal · L T Contractors Inc · MSHA ID 3503348
    Abandoned
  12. Lakewood Pit
    Surface metal/non-metal · Empco · MSHA ID 3503041
    Abandoned
  13. Linnton DBA CalPortland
    Surface metal/non-metal · CalPortland Company · MSHA ID 3503475
    Abandoned
  14. Meadows Rock
    Surface metal/non-metal · Wilkins Trucking Company Inc · MSHA ID 3503491
    Abandoned
  15. Moore Excavation Inc
    Surface metal/non-metal · Moore Excavation Inc · MSHA ID 3503609
    Abandoned
  16. NUTTER PORTABLE CRUSHER
    Surface metal/non-metal · Nutter Underground · MSHA ID 3503338
    Abandoned
  17. Portable
    Surface metal/non-metal · Golden Streets Mining, L.L.C. · MSHA ID 3503876
    Abandoned
  18. PORTABLE #1
    Surface metal/non-metal · Kiewit Pacific Co. · MSHA ID 3503238
    Abandoned
  19. Portable Crusher
    Surface metal/non-metal · Bart Associates Inc · MSHA ID 3503281
    Abandoned
  20. Porters Point 1610 Trs
    Surface metal/non-metal · U S Forest Service · MSHA ID 3501344
    Abandoned
  21. Portland Sand & Gravel Company Incorpora
    Surface metal/non-metal · Portland Sand & Gravel Company Inc · MSHA ID 3500529
    Abandoned
  22. Rainier Rock
    Surface metal/non-metal · Rainier Rock LLC · MSHA ID 3503676
    Abandoned
  23. Rickard Rock Quarry
    Surface metal/non-metal · Farwest Portable Crushing Inc · MSHA ID 3503655
    Abandoned
  24. Rivergate Quarry And Plant
    Surface metal/non-metal · Columbia West Materials & Constructors Inc · MSHA ID 3500076
    Abandoned
  25. Ross Island Plant
    Surface metal/non-metal · Ross Island Sand & Gravel Company · MSHA ID 3500540
    Abandoned
  26. South Side 1621 Trs
    Surface metal/non-metal · U S Forest Service · MSHA ID 3501350
    Abandoned
  27. Stark Pit
    Surface metal/non-metal · Columbia Sand & Gravel Cascade Const · MSHA ID 3500932
    Abandoned
  28. SUNDIAL
    Surface metal/non-metal · Morse Brothers Inc · MSHA ID 3503401
    Abandoned
  29. Swan Island Sand And Gravel
    Surface metal/non-metal · Western-Pacific Construction Materials Company · MSHA ID 3501329
    Abandoned
  30. Troutdale Pit And Plant
    Surface metal/non-metal · Troutdale Sand & Gravel Company Inc · MSHA ID 3500553
    Abandoned
  31. VANCE PIT & PLANT
    Surface metal/non-metal · Multnomah Cnty-Or Transportation & Land Use Plng · MSHA ID 3500419
    Abandoned
  32. Walrath/Bluelake Pit
    Surface metal/non-metal · T. E. Walrath Trucking Inc. · MSHA ID 3503554
    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
Quarry 17
Gravel Pit 14
Open Pit Mine or Quarry 13
Borrow Pit 12
Gravel Pit 11
Sand and Gravel Pit 6
Quarry 5
Gravel/Borrow Pit - Undifferentiated 4
Clay Pit 2
Open Pit Mine 1
Other counties in OregonAll 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.