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Abandoned mines › Oregon
Abandoned mine inventory

Abandoned mines in Umatilla County, Oregon

Umatilla County, Oregon has 181 mine and prospect features on USGS topographic maps published 1962–1995, including 1 mine openings (shafts, adits and air shafts) and 1 prospect pits. 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 Umatilla 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)
181
Mine openings
1
OSMRE problems unreclaimed
0
MSHA mines marked abandoned
30
0 features carry a name1 prospect pits48 quadrangle maps, published 1962–1995 0 MSHA mines abandoned and sealed
What the features are
  1. Mine openings
    shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
    1 0.6%
  2. Prospect pits and trenches
    shallow exploration diggings that never became a mine
    1 0.6%
  3. Mines and surface workings
    labelled mines, open pits, strip mines, placer and hydraulic workings
    2 1.1%
  4. Quarries, gravel and borrow pits
    construction-material and industrial-mineral extraction
    177 97.8%
MSHA-registered mines with status Abandoned30 on register
  1. Baker Pit
    Surface metal/non-metal · Logsdon Ready-Mix Inc · MSHA ID 3503357
    Abandoned
  2. BAKER PIT
    Surface metal/non-metal · Central Pre-Mix Of Oregon · MSHA ID 3503451
    Abandoned
  3. Barnhart Pit No 2
    Surface metal/non-metal · Morrison-Knudsen Company Inc · MSHA ID 3502334
    Abandoned
  4. Barnhart Quarry
    Surface metal/non-metal · Barnhart Rock Products · MSHA ID 3500428
    Abandoned
  5. Barnhart Quarry
    Surface metal/non-metal · Weaver Stone Products Company · MSHA ID 3503305
    Abandoned
  6. Barnhart Quarry
    Surface metal/non-metal · Rod Anderson Construction, Inc. · MSHA ID 3503634
    Abandoned
  7. Boggotti Pit
    Surface metal/non-metal · Umatilla County Road Department · MSHA ID 3500623
    Abandoned
  8. Bonney Pit
    Surface metal/non-metal · Hermiston Ready Mix · MSHA ID 3502987
    Abandoned
  9. Coombs Canyon Pit
    Surface metal/non-metal · Umatilla County Road Department · MSHA ID 3501710
    Abandoned
  10. County Line Road Pit
    Surface metal/non-metal · Hermiston Rock Products LLC · MSHA ID 3503454
    Abandoned
  11. Couse Creek Quarry
    Surface metal/non-metal · Konen Rock Products Inc · MSHA ID 3503264
    Abandoned
  12. Crusher 1
    Surface metal/non-metal · Thacker Excavating Inc · MSHA ID 3503800
    Abandoned
  13. German Hall Pit
    Surface metal/non-metal · Umatilla County Road Department · MSHA ID 3502748
    Abandoned
  14. GRUBBS PIT
    Surface metal/non-metal · Pioneer Asphalt Inc · MSHA ID 3503333
    Abandoned
  15. Humbert Enterprises Portable Crusher No
    Surface metal/non-metal · Humbert Enterprises Inc · MSHA ID 3503282
    Abandoned
  16. Job 75
    Surface metal/non-metal · Riverbend Construction Company · MSHA ID 3500527
    Abandoned
  17. Material Source 30-3-5
    Surface metal/non-metal · Stan Schnell Contractor · MSHA ID 3502607
    Abandoned
  18. MILTON-FREWATER
    Surface metal/non-metal · Ready Mix Ltd · MSHA ID 3500533
    Abandoned
  19. Plant #1
    Surface metal/non-metal · De Atley Company Inc · MSHA ID 3503278
    Abandoned
  20. Plant #2
    Surface metal/non-metal · De Atley Company Inc · MSHA ID 3503279
    Abandoned
  21. Plant #3
    Surface metal/non-metal · De Atley Company Inc · MSHA ID 3503277
    Abandoned
  22. Portable Crusher
    Surface metal/non-metal · Mocon Corp · MSHA ID 3503251
    Abandoned
  23. Portable Crusher
    Surface metal/non-metal · Pacific Rock Products Inc · MSHA ID 3503271
    Abandoned
  24. Portable Crusher #1
    Surface metal/non-metal · Morse Brothers Inc · MSHA ID 3503256
    Abandoned
  25. Portable Crusher Number 1
    Surface metal/non-metal · Columbia Western Crushing · MSHA ID 3503273
    Abandoned
  26. Project U-67-C
    Surface metal/non-metal · Riverbend Construction Company · MSHA ID 3502809
    Abandoned
  27. Screening Plant-4
    Surface metal/non-metal · De Atley Company Inc · MSHA ID 3503285
    Abandoned
  28. SNIPE MTN. SAND
    Surface metal/non-metal · Snipe Mountain Sand · MSHA ID 3503253
    Abandoned
  29. Spence Pit
    Surface metal/non-metal · Humbert Excavating Inc · MSHA ID 3503323
    Abandoned
  30. STU BONNEY PIT
    Surface metal/non-metal · Logsdons Construction · MSHA ID 3503455
    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 79
Quarry 34
Gravel Pit 28
Borrow Pit 11
Gravel/Borrow Pit - Undifferentiated 8
Sand Pit 6
Borrow Pit 5
Quarry 3
Sand Pit 2
Prospect Pit 1
Adit 1
Sand and Gravel Pit 1
Disturbed Surface 1
Disturbed Surface - Pit 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.