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MSHA mine register by county

Mines in Mendocino County, California

Mendocino County, California has 44 mines on MSHA's register: 3 active, 7 intermittent, 34 abandoned. 1 miner has died and 44 accidents have been reported at these mines between 1987 and 2020. Inspectors have issued 835 citations.

Every mine MSHA has registered in Mendocino 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 Mendocino County →

Mines on register
44
Active
3
Fatalities on record
1
Citations issued
835
0 underground · 42 surface · 2 facilities 0 coal · 44 metal and non-metal 7 intermittent 34 abandoned 44 reported accidents, 1987–2020
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.
Mendocino County, California · Population 90,709
0.3%
Mining share of county employment
$64,688
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
On the map 
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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
Hot Rocks Inc 4 0 0
Granite Construction Co 3 0 1
Geo Aggregates 3 0 0
NorCal Recycled Rock & Aggregates Inc 3 1 0
Northern Aggregates Inc 3 1 0
Parnum Paving Inc 3 0 0
Laytonville Rock 2 0 0
B & B Equipment & Quarry 1 0 0
Baxman Gravel Company Inc 1 0 0
Bed Rock Inc 1 0 0
Mines in Mendocino County44 on register
  1. Harris Quarry
    Surface metal/non-metal · Northern Aggregates Inc · MSHA ID 0405139
    Active
  2. Ford Gravel
    Facility metal/non-metal · Nor-Cal Recycled Rock & Aggregates, Inc. · MSHA ID 0401770
    Active
  3. Grist Creek Aggregates, Longvale Plant
    Facility metal/non-metal · Grist Creek Aggregates LLC · MSHA ID 0405833
    Active
  4. Red Rock Quarry
    Surface metal/non-metal · Granite Construction Co · MSHA ID 0404761
    Abandoned
  5. Blue Ridge Quarry
    Surface metal/non-metal · CalMat Co. · MSHA ID 0405355
    Abandoned
  6. Ten Mile River Plant
    Surface metal/non-metal · Geo Aggregates · MSHA ID 0401755
    Intermittent
  7. Big River Rock Co
    Surface metal/non-metal · Big River Rock Co · MSHA ID 0402775
    Abandoned
  8. Laytonville Rock
    Surface metal/non-metal · Laytonville Rock · MSHA ID 0405283
    Abandoned
  9. NORCAL
    Surface metal/non-metal · NORCAL Recycled Rock & Aggregate Inc · MSHA ID 0405568
    Abandoned
  10. Shuster Quarry
    Surface metal/non-metal · Granite Construction Co · MSHA ID 0405071
    Abandoned
  11. Wilsey Ranch Quarry
    Surface metal/non-metal · Kibesillah Rock Company · MSHA ID 0405353
    Intermittent
  12. BALD HILLS QUARRY
    Surface metal/non-metal · Humboldt Redwood Company, LLC · MSHA ID 0405285
    Intermittent
  13. Geo Plant
    Surface metal/non-metal · Geo Aggregates · MSHA ID 0405933
    Intermittent
  14. Johnson Pit
    Surface metal/non-metal · Robert Pardini Logging · MSHA ID 0405592
    Intermittent
  15. Sherwood Rd Quarry
    Surface metal/non-metal · Geo Aggregates · MSHA ID 0405033
    Intermittent
  16. Parnum Paving Incorporated
    Surface metal/non-metal · Parnum Paving Inc · MSHA ID 0401904
    Abandoned
  17. Greenwood Aggregates
    Surface metal/non-metal · Greenwood Aggregates Inc · MSHA ID 0405703
    Intermittent
  18. Mendocino Aggregates
    Surface metal/non-metal · Granite Construction Co · MSHA ID 0403373
    Abandoned
  19. Willits Pit & Mill
    Surface metal/non-metal · Shuster'S Willits Ready Mix Inc · MSHA ID 0402001
    Abandoned
  20. Warbonnet Rock Products
    Surface metal/non-metal · Warbonnet Rock Products · MSHA ID 0405233
    Abandoned
  21. REDWOOD VALLEY GRAVEL
    Surface metal/non-metal · Redwood Valley Gravel Products · MSHA ID 0403543
    Abandoned
  22. B&B Quarry
    Surface metal/non-metal · B & B Equipment & Quarry · MSHA ID 0405409
    Abandoned
  23. BIG RIVER ROCK CO.
    Surface metal/non-metal · Big River Rock Company · MSHA ID 0405272
    Abandoned and Sealed
  24. Portable
    Surface metal/non-metal · Northern Aggregates Inc · MSHA ID 0405591
    Abandoned
  25. Cleland Bar
    Surface metal/non-metal · NorCal Recycled Rock & Aggregates Inc · MSHA ID 0405427
    Abandoned
  26. Apache Pit
    Surface metal/non-metal · Hot Rocks Inc · MSHA ID 0404687
    Abandoned
  27. Arnold Portable
    Surface metal/non-metal · Peters & Garman Construction · MSHA ID 0405088
    Abandoned
  28. BED ROCK, INC.
    Surface metal/non-metal · Bed Rock Inc · MSHA ID 0405056
    Abandoned
  29. Garcia Aggregates
    Surface metal/non-metal · Garcia Aggregates · MSHA ID 0401777
    Abandoned
  30. Ham Quarry
    Surface metal/non-metal · Hot Rocks Inc · MSHA ID 0404686
    Abandoned
  31. Hells 1/2 Acre
    Surface metal/non-metal · Hot Rocks Inc · MSHA ID 0404683
    Abandoned
  32. Hot Rocks #1
    Surface metal/non-metal · Hot Rocks Inc · MSHA ID 0404682
    Abandoned
  33. Lin W Ford Quarry
    Surface metal/non-metal · Lin W Ford Construction · MSHA ID 0404685
    Abandoned
  34. Lucky Strike
    Surface metal/non-metal · Rand Rock Company · MSHA ID 0404751
    Abandoned
  35. Mattern Sand & Gravel
    Surface metal/non-metal · Mattern Sand & Gravel · MSHA ID 0401856
    Abandoned
  36. Pieta Quarry
    Surface metal/non-metal · Northern Aggregates Inc · MSHA ID 0405039
    Abandoned
  37. PORTABLE CRUSHER I
    Surface metal/non-metal · Parnum Paving Inc · MSHA ID 0405245
    Abandoned
  38. Premier Track300 Crusher
    Surface metal/non-metal · Laytonville Rock · MSHA ID 0405923
    Abandoned
  39. Russian River Portable
    Surface metal/non-metal · Ghilotti Brothers Construction · MSHA ID 0404891
    Abandoned
  40. Second Crossing Pit
    Surface metal/non-metal · Georgia Pacific Corp · MSHA ID 0404120
    Abandoned
  41. Stagecoach Quarry
    Surface metal/non-metal · Stagecoach Village Inc · MSHA ID 0405089
    Abandoned
  42. Ten Mile Second Crossing
    Surface metal/non-metal · Baxman Gravel Company Inc · MSHA ID 0405244
    Abandoned
  43. Ukiah Plant
    Surface metal/non-metal · Shamrock Materials Inc · MSHA ID 0405058
    Abandoned
  44. WILLITS CRUSHER
    Surface metal/non-metal · Parnum Paving Inc · MSHA ID 0404684
    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.