Mining Incidents
Search Operators Mines Alerts Research Controllers Fatalgrams About
Countries
Peru Chile
English Español
States › California
MSHA mine register by county

Mines in Humboldt County, California

Humboldt County, California has 61 mines on MSHA's register: 7 active, 20 intermittent, 34 abandoned. 35 accidents have been reported at these mines between 1993 and 2022. Inspectors have issued 1,722 citations.

Every mine MSHA has registered in Humboldt County, working or not, with the accident, fatality and citation record each one carries on this site. Active mines are listed first, then the rest by the weight of their record.

Abandoned and historical mine features in Humboldt County →

Mines on register
61
Active
7
Fatalities on record
0
Citations issued
1,722
0 underground · 59 surface · 2 facilities 0 coal · 61 metal and non-metal 20 intermittent 34 abandoned 35 reported accidents, 1993–2022
Local economic context
ⓘ County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Humboldt County, California · Population 135,418
0.1%
Mining share of county employment
$61,135
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
On the map 
Loading map…
MSHA-registered mine, any status

Mines plot only where MSHA holds a surveyed coordinate for the site; mines the agency locates to a town, county or state centroid are in the counts and the list above but not drawn. Click a point for the mine's status and record.

Operators with the most mines herecurrent operator of record
Operator Mines Active Fatalities
KERNEN CONSTRUCTION 14 3 0
Mercer, Fraser Company 8 0 0
Eureka Sand & Gravel Co. Inc. 4 2 0
Humboldt County Department of Public Works 3 0 0
Humboldt Redwood Company, LLC 3 0 0
Hoopa Valley Ready Mix 2 0 0
Artron Enterprises Inc 1 0 0
Drake Materials Inc 1 0 0
Figas-R R-Jv 1 0 0
G.R. Wilcox Enterprises Inc 1 0 0
Mines in Humboldt County61 on register
  1. Hoopa Valley Tribe Roads Department
    Surface metal/non-metal · Hoopa Roads Aggregate and Ready Mix · MSHA ID 0405901
    Active
  2. Randall Sand & Gravel
    Surface metal/non-metal · Randall Sand & Gravel · MSHA ID 0404280
    Active
  3. Hatchery Road Crusher
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405116
    Active
  4. CHRISTIE BAR
    Surface metal/non-metal · Eureka Sand & Gravel Co. Inc. · MSHA ID 0401760
    Active
  5. ALTON PIT & MILL
    Surface metal/non-metal · Eureka Sand & Gravel Co Inc · MSHA ID 0402711
    Active
  6. Bear Butte Quarry
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405687
    Active
  7. Ford Quarries
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405823
    Active
  8. Willow Creek Portable Crusher
    Surface metal/non-metal · Mercer, Fraser Company · MSHA ID 0402767
    Intermittent
  9. Sandy Prairie Portable Crusher Plant A
    Surface metal/non-metal · Mercer Fraser Co · MSHA ID 0402764
    Intermittent
  10. Mercer Fraser Plant B Portable Crusher
    Surface metal/non-metal · Mercer Fraser Co · MSHA ID 0405108
    Intermittent
  11. Roads Extec Crusher
    Surface metal/non-metal · Humboldt Redwood Company LLC · MSHA ID 0405282
    Intermittent
  12. Bess Bar
    Surface metal/non-metal · Thomas R Bess · MSHA ID 0405111
    Intermittent
  13. Humboldt Quarries
    Surface metal/non-metal · Humboldt County Department of Public Works · MSHA ID 0402714
    Intermittent
  14. Bridgeville Quarry
    Surface metal/non-metal · Mercer-Fraser Company · MSHA ID 0405742
    Intermittent
  15. ERM Rock
    Surface metal/non-metal · Eureka Ready Mix Concrete Co Inc · MSHA ID 0405368
    Intermittent
  16. Mason Materials
    Facility metal/non-metal · Mason Materials LLC · MSHA ID 0405646
    Abandoned
  17. Graham Pit & Mill
    Surface metal/non-metal · Granite Construction Co · MSHA ID 0401920
    Abandoned
  18. Cooks Valley Portable Crusher
    Surface metal/non-metal · Mercer Fraser Co · MSHA ID 0405219
    Abandoned
  19. Hansen Pit & Mill
    Surface metal/non-metal · Hansen Truck Stop Inc · MSHA ID 0404441
    Abandoned
  20. Extec Screener
    Surface metal/non-metal · Humboldt Redwood Company LLC · MSHA ID 0405488
    Abandoned
  21. Dinsmore Portable Crusher
    Surface metal/non-metal · Mercer Fraser Company · MSHA ID 0405248
    Abandoned
  22. Wheeler-Hagan Rock Quarry
    Surface metal/non-metal · Jim Wheeler Logging & Rock · MSHA ID 0405618
    Abandoned
  23. Baker Creek Quarry
    Surface metal/non-metal · G.R. Wilcox Enterprises Inc · MSHA ID 0405858
    Abandoned
  24. Humboldt Bay Gravel Incorporated
    Surface metal/non-metal · Humboldt Bay Gravel Inc · MSHA ID 0404908
    Abandoned
  25. LT105 Jaw
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405648
    Intermittent
  26. Eureka Ready Arcata Pit
    Surface metal/non-metal · Eureka Sand & Gravel Co Inc · MSHA ID 0402710
    Abandoned
  27. Extec
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405684
    Intermittent
  28. R Brown & Son's Quarry
    Surface metal/non-metal · R Brown & Son's Quarry · MSHA ID 0405388
    Intermittent
  29. RUC QUARRY
    Surface metal/non-metal · TT CONSTRUCTION · MSHA ID 0405889
    Abandoned
  30. Carlotta Wash Plant
    Facility metal/non-metal · Pacific Lumber Company · MSHA ID 0405462
    Abandoned
  31. El Jay Cone
    Surface metal/non-metal · Humboldt Redwood Company, LLC · MSHA ID 0405894
    Intermittent
  32. Portable #1
    Surface metal/non-metal · Mercer Fraser Co · MSHA ID 0405958
    Intermittent
  33. Power Screen 1
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405443
    Abandoned
  34. Kernen Portable Crusher I
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405335
    Abandoned
  35. Wahlund Construction, Inc.
    Surface metal/non-metal · Wahlund Construction, Inc. · MSHA ID 0405982
    Intermittent
  36. Liscom Hill Quarry
    Surface metal/non-metal · R Brown Construction · MSHA ID 0405948
    Intermittent
  37. LELAND ROCK MINE
    Surface metal/non-metal · Rock & Gadberry Gravel · MSHA ID 0405461
    Abandoned
  38. Humboldt Screener
    Surface metal/non-metal · Humboldt County Department of Public Works · MSHA ID 0405949
    Intermittent
  39. DRAKE MATERIALS
    Surface metal/non-metal · Drake Materials Inc · MSHA ID 0404067
    Abandoned
  40. LT106 Jaw
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405899
    Intermittent
  41. MDS M515 Screener
    Surface metal/non-metal · KERNEN CONSTRUCTION · MSHA ID 0405984
    Intermittent
  42. PARKER JAW #1
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405590
    Abandoned
  43. Arcata Mill
    Surface metal/non-metal · Artron Enterprises Inc · MSHA ID 0404740
    Abandoned
  44. Arcata Plant
    Surface metal/non-metal · S & A Development Company Inc · MSHA ID 0404197
    Abandoned
  45. Blue Lake Pit And Mill
    Surface metal/non-metal · Miller'S Backhoe & Excavating · MSHA ID 0404052
    Abandoned
  46. Cooks Valley
    Surface metal/non-metal · Mercer Fraser Company · MSHA ID 0402699
    Abandoned
  47. Dinsmore Pit
    Surface metal/non-metal · State Of California Department Of Transportation · MSHA ID 0402769
    Abandoned
  48. Dusi Pit
    Surface metal/non-metal · Simpson Timber Co · MSHA ID 0404386
    Abandoned
  49. El Jay Plant #1
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405581
    Abandoned
  50. Hoopa Valley Ready Mix
    Surface metal/non-metal · Hoopa Valley Ready Mix · MSHA ID 0404970
    Abandoned
  51. JC FRENCH
    Surface metal/non-metal · JC FRENCH EXCAVATION · MSHA ID 0405957
    Abandoned
  52. JC-1
    Surface metal/non-metal · T and H Construction · MSHA ID 0405978
    Abandoned
  53. Mc Intosh Mine
    Surface metal/non-metal · Mc Intosh Construction · MSHA ID 0404399
    Abandoned
  54. Powerscreen Trakpactor Crusher
    Surface metal/non-metal · KERNEN CONSTRUCTION · MSHA ID 0405985
    Intermittent
  55. Redwood Creek Bar
    Surface metal/non-metal · Joseph Hufford Sand & Gravel · MSHA ID 0404278
    Abandoned
  56. Rental Crusher
    Surface metal/non-metal · Kernen Construction · MSHA ID 0405721
    Abandoned
  57. Rowland Pit And Mill
    Surface metal/non-metal · Hoopa Valley Ready Mix · MSHA ID 0402765
    Abandoned
  58. Salyer Pit And Mill
    Surface metal/non-metal · Mc Knight Redi-Mix · MSHA ID 0404073
    Abandoned
  59. Sandvik QE442 Screener
    Surface metal/non-metal · KERNEN CONSTRUCTION · MSHA ID 0405983
    Intermittent
  60. Singley Pit
    Surface metal/non-metal · County Of Humboldt · MSHA ID 0402713
    Abandoned
  61. Warswick Bar
    Surface metal/non-metal · Figas-R R-Jv · MSHA ID 0404907
    Abandoned

Status, type and operator are as reported to MSHA. Fatality and accident counts are MSHA's reportable accident records for the mine; citations are inspector-issued violations on record. Each mine's own page carries the full detail.

Other counties in CaliforniaAll counties →
How to read these numbers

The register is MSHA's Mine Data Retrieval System: every operation ever assigned a mine ID, including ones abandoned decades ago, so the count is a history of mining in the county, not a count of working mines. A mine's county is the one its operator reported to MSHA. Fatality and accident counts start with MSHA's reportable-accident records (1983 onward); citation counts are inspector-issued violations on record. We are an independent research tool, not MSHA.