Abandoned mines in Shasta County, California

1. Mine openings

   shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
   156 18.7%
2. Prospect pits and trenches

   shallow exploration diggings that never became a mine
   287 34.4%
3. Mines and surface workings

   labelled mines, open pits, strip mines, placer and hydraulic workings
   58 7.0%
4. Quarries, gravel and borrow pits

   construction-material and industrial-mineral extraction
   187 22.4%
5. Dumps, tailings, spoil and gob

   what mining left above ground
   146 17.5%

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. Anderson Cottonwood Pit

   Surface metal/non-metal · ACCP · MSHA ID 0401688
   Abandoned 2015-10-01
2. BEAR GULCH ENTERPRISES INC

   Surface metal/non-metal · Stimpel Wiebelhaus Associates Inc. · MSHA ID 0405382
   Abandoned 2025-03-20
3. Ben Bridge Trust Allottment No. Red-14

   Surface metal/non-metal · Volcano Rock, Inc. · MSHA ID 0405630
   Abandoned 2018-09-04
4. Black Butte Cinders

   Surface metal/non-metal · Black Butte Cinders · MSHA ID 0405596
   Abandoned 2025-06-30
5. BRANDEN SAND PIT

   Surface metal/non-metal · Hat Creek Construction Inc · MSHA ID 0405477
   Abandoned 2003-03-27
6. Brush Mountain Pit

   Surface metal/non-metal · Shasta County Department Of Public Works · MSHA ID 0405034
   Abandoned 2003-08-26
7. CHUCK WOLF SAND & GRAVEL

   Surface metal/non-metal · CHUCK WOLF SAND & GRAVEL · MSHA ID 0405582
   Abandoned 2006-04-24
8. Clear Creek Pit 2

   Surface metal/non-metal · Mountain Gate Quarry Inc · MSHA ID 0404865
   Abandoned 1990-03-16
9. Clear Creek Pit And Mill

   Surface metal/non-metal · Clear Creek Sand & Gravel · MSHA ID 0404144
   Abandoned 1979-07-16
10. D & D Portable Crusher

    Surface metal/non-metal · D & D Crushing Inc · MSHA ID 0404959
    Abandoned 1989-09-28
11. Del Pac Sybil Mine

    Underground metal/non-metal · Del Pac Llc-(Arizona) · MSHA ID 0405151
    Abandoned 1995-07-17
12. Eastside Aggregates

    Surface metal/non-metal · Hat Creek Construction Inc · MSHA ID 0405479
    Abandoned 2025-03-20
13. Fall River Mills Pits

    Surface metal/non-metal · Shasta County · MSHA ID 0404207
    Abandoned 1982-07-30
14. FAWNDALE ROCK & ASPHALT

    Surface metal/non-metal · Jaxon Enterprises · MSHA ID 0405150
    Abandoned 1997-12-11
15. Fgs Pit

    Surface metal/non-metal · Fruit Growers Supply Company · MSHA ID 0404206
    Abandoned 1978-08-22
16. Fraley Pit And Mill

    Surface metal/non-metal · Dean Franks & Ed Axner · MSHA ID 0404145
    Abandoned 1979-07-16
17. Gray Rock Quarry

    Surface metal/non-metal · Calaveras Cement Company · MSHA ID 0404349
    Abandoned 1989-01-03
18. Happy Valley Pit And Mill

    Surface metal/non-metal · Happy Valley Gravel Company · MSHA ID 0404180
    Abandoned 1978-01-24
19. Holly Sugar Quarry

    Surface metal/non-metal · Peter Kiewit Sons' Company · MSHA ID 0404229
    Abandoned 1982-07-30
20. Iron Mountain Mines

    Surface metal/non-metal · Iron Mountain Mines Inc · MSHA ID 0402490
    Abandoned 1992-06-18
21. Kapusta Pit And Mill

    Surface metal/non-metal · Kapusta Sand & Gravel · MSHA ID 0404143
    Abandoned 1984-06-08
22. LAKE BRITTON BASIN PIT

    Surface metal/non-metal · Cox & Coleman Construction · MSHA ID 0404986
    Abandoned 1999-01-04
23. LW Hall Co Inc DBA Oak Run Quarry

    Surface metal/non-metal · Cobalt Crushing · MSHA ID 0405228
    Abandoned 2008-07-23
24. MANNING PORTABLE PLANT 19-03

    Surface metal/non-metal · Steve Manning Construction, Inc. · MSHA ID 0405435
    Abandoned 2012-07-11
25. Milkmaid Mine

    Underground metal/non-metal · G & S Mining Company · MSHA ID 0404944
    Abandoned 2021-06-30
26. MOUNTAIN GATE LIMESTONE QUARRY

    Surface metal/non-metal · Stimpel Wiebelhaus Associates · MSHA ID 0404960
    Abandoned 2001-10-22
27. NIAGARA PROJECT

    Underground metal/non-metal · Lion Trail Minerals Inc · MSHA ID 0405278
    Abandoned 1997-12-31
28. NORTHSTATE ASPHALT, INC

    Surface metal/non-metal · Northstate Asphalt Inc · MSHA ID 0404346
    Abandoned 1998-08-25
29. Oak Run Pits

    Surface metal/non-metal · Shasta County · MSHA ID 0404228
    Abandoned 1982-09-01
30. Pedrotti Materials

    Surface metal/non-metal · Pedrotti Materials LLC · MSHA ID 0405724
    Abandoned 2023-12-14
31. Portable #1

    Surface metal/non-metal · J F Shea Construction, Inc. · MSHA ID 0405214
    Abandoned 2017-01-19
32. Reid Mine

    Underground metal/non-metal · T R C Resources Inc · MSHA ID 0404458
    Abandoned 1989-10-25
33. Rich Ranch Reclamation

    Surface metal/non-metal · North Fork Aggregate · MSHA ID 0405599
    Abandoned 2007-10-22
34. Rocky Jewel Mine

    Surface metal/non-metal · Rocky Jewel Mine · MSHA ID 0404202
    Abandoned 1986-04-04
35. SCHNETZER PORTABLE PLANT

    Facility metal/non-metal · Schnetzer Engineering Inc · MSHA ID 0405262
    Abandoned 2009-09-15
36. Shasta Ranch Aggregates

    Surface metal/non-metal · Tullis, Inc. · MSHA ID 0405753
    Abandoned 2023-01-12
37. Shea 2 Pit And Mill

    Surface metal/non-metal · J F Shea Company Inc · MSHA ID 0401873
    Abandoned 1978-08-15
38. Silver Falls

    Underground metal/non-metal · James D Parrott Mining & Timber Company · MSHA ID 0404569
    Abandoned 1983-10-21
39. Six Mile Hill

    Surface metal/non-metal · Hat Creek Construction Inc · MSHA ID 0405179
    Abandoned 1994-08-24
40. Stillwater Gravel Pit

    Surface metal/non-metal · Stillwater Gravel Company · MSHA ID 0403816
    Abandoned 1985-08-26
41. Stones Pit And Mill

    Surface metal/non-metal · Stones Sand & Gravel · MSHA ID 0404142
    Abandoned 1982-08-09
42. Swarts Sand & Gravel

    Surface metal/non-metal · Swarts Sand & Gravel · MSHA ID 0405256
    Abandoned 1995-03-10
43. Tullis & Associates-Portable Plant

    Surface metal/non-metal · Tullis & Associates Inc · MSHA ID 0404935
    Abandoned 1989-05-10
44. Venture Ii Mine

    Surface metal/non-metal · Venture Ii Ltd · MSHA ID 0404585
    Abandoned 1988-11-21
45. Washington-Niagra Mines

    Underground metal/non-metal · G & S Mining · MSHA ID 0403424
    Abandoned 1988-08-08
46. West Valley Sand & Gravel

    Surface metal/non-metal · West Valley Sand & Gravel · MSHA ID 0405689
    Abandoned 2017-07-05
47. Wilcox Gravel Pit

    Surface metal/non-metal · Packway Materials Inc · MSHA ID 0401902
    Abandoned 1995-07-25
48. Wildcat Pit

    Surface metal/non-metal · Meyers Earthwork Inc · MSHA ID 0405790
    Abandoned 2009-11-13

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

• San Bernardino County 14,976
• Inyo County 11,475
• Kern County 4,879
• Riverside County 3,227
• Mono County 2,946
• Siskiyou County 2,362
• Imperial County 1,232
• Mariposa County 1,079
• Tuolumne County 948
• San Diego County 901
• Calaveras County 840
• Trinity County 685

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.