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MSHA mine register by county

Mines in Plumas County, California

Plumas County, California has 46 mines on MSHA's register: 3 active, 7 intermittent, 36 abandoned. 1 miner has died and 50 accidents have been reported at these mines between 1983 and 2025. Inspectors have issued 503 citations.

Every mine MSHA has registered in Plumas 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 Plumas County →

Mines on register
46
Active
3
Fatalities on record
1
Citations issued
503
9 underground · 36 surface · 1 facilities 0 coal · 46 metal and non-metal 7 intermittent 36 abandoned 50 reported accidents, 1983–2025
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.
Plumas County, California · Population 19,607
0.5%
Mining share of county employment
$64,946
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
R & J Joy, Inc. dba Joy Engineering 8 2 0
Sierra Cascade Aggregate & Asphalt Products, Inc. 3 1 0
Hilltop Mining Company Inc 2 0 0
Plumas Gold Mines Usa Inc 1 0 1
Al Wasley 1 0 0
Augury Institute Llc 1 0 0
Avid Mining Company 1 0 0
B & R Quarries 1 0 0
C B S Aggregates Llc 1 0 0
Calgom Mining Inc 1 0 0
Mines in Plumas County46 on register
  1. iRock Crusher
    Surface metal/non-metal · Sierra Cascade Aggregate & Asphalt Products, Inc. · MSHA ID 0405914
    Active
  2. Sloat Quarry
    Surface metal/non-metal · Joy Engineering · MSHA ID 0404410
    Active
  3. Powerscreen 1300 Max PID13MXTCOMC55064
    Surface metal/non-metal · Joy Engineering · MSHA ID 2602879
    Active
  4. Plumas Gold Mine
    Underground metal/non-metal · Plumas Gold Mines Usa Inc · MSHA ID 0404669
    Abandoned
  5. Calgom Mining Incorporated
    Facility metal/non-metal · Calgom Mining Inc · MSHA ID 0404543
    Abandoned
  6. North Chester Pit
    Surface metal/non-metal · Sierra Cascade Aggregate & Asphalt Products, Inc. · MSHA ID 0404724
    Abandoned
  7. Blasted Rock Quarry
    Surface metal/non-metal · R & J Joy, Inc. dba Joy Engineering · MSHA ID 0405364
    Intermittent
  8. Soper Pit
    Surface metal/non-metal · Spanish Creek Sand & Gravel LLC · MSHA ID 0404788
    Intermittent
  9. CAGLE PIT
    Surface metal/non-metal · Feather River Rock Company · MSHA ID 0405325
    Abandoned
  10. FEATHER RIVER TRAVERTINE QUARRY
    Surface metal/non-metal · B & R Quarries · MSHA ID 0402321
    Abandoned
  11. Sparrock Pit
    Surface metal/non-metal · Joy Engineering · MSHA ID 0405515
    Intermittent
  12. Mill Bar Pit
    Surface metal/non-metal · Riverside Rock II · MSHA ID 0405500
    Abandoned
  13. SPANISH CREEK SAND & GRAVEL
    Surface metal/non-metal · Chatfield Ranch Llc · MSHA ID 0401667
    Abandoned
  14. Feather River Rock South Chester Pit
    Surface metal/non-metal · Sierra Cascade Aggregate & Asphalt Products Inc · MSHA ID 0405346
    Intermittent
  15. Grande Finale-Ken Millie
    Surface metal/non-metal · Augury Institute Llc · MSHA ID 0405258
    Abandoned
  16. Underground Seneca Properties
    Underground metal/non-metal · Hilltop Mining Company Inc · MSHA ID 0404373
    Abandoned
  17. Portable Plant #1
    Surface metal/non-metal · Feather River Materials Inc · MSHA ID 0405489
    Abandoned
  18. CRYSTAL PEAK
    Surface metal/non-metal · C B S Aggregates Llc · MSHA ID 0405464
    Abandoned and Sealed
  19. Goss Pit
    Surface metal/non-metal · Joy Engineering · MSHA ID 0405871
    Abandoned
  20. Roberti Ranch
    Surface metal/non-metal · Folchi Logging & Construction Inc · MSHA ID 0405780
    Intermittent
  21. 1310 finley
    Surface metal/non-metal · Wilburn Construction Inc. · MSHA ID 0405880
    Abandoned
  22. Telestack Belt TC-421R
    Surface metal/non-metal · Joy Engineering · MSHA ID 2602881
    Abandoned
  23. Powerscreen 1800 Warrior PID00123PDGF299
    Surface metal/non-metal · Joy Engineering · MSHA ID 2602878
    Intermittent
  24. Powerscreen Jaw PIDPT400HOME28251
    Surface metal/non-metal · Joy Engineering · MSHA ID 2602877
    Intermittent
  25. 12 Mile Bar
    Surface metal/non-metal · Sharp'S & Son'S · MSHA ID 0404657
    Abandoned
  26. Caribou
    Surface metal/non-metal · High Sierra Mining Inc · MSHA ID 0404616
    Abandoned
  27. China Bar/Insurance #1
    Surface metal/non-metal · First California Financial & Development · MSHA ID 0404504
    Abandoned
  28. Doyle Crossing Pit
    Surface metal/non-metal · Miller'S Custom Work Inc · MSHA ID 0404214
    Abandoned
  29. Feather River Pit And Mill
    Surface metal/non-metal · Crushed Stone Aggregates · MSHA ID 0404227
    Abandoned
  30. Fred Scott Placer
    Underground metal/non-metal · Lucky Chance Mining Company Inc · MSHA ID 0404367
    Abandoned
  31. Huntington Crusher
    Surface metal/non-metal · Plumas Rock Inc · MSHA ID 0404203
    Abandoned
  32. Indian Creek Mining
    Surface metal/non-metal · Indian Creek Mining Association · MSHA ID 0404542
    Abandoned
  33. Indian Valley Rock
    Surface metal/non-metal · Turner Excavating, Inc · MSHA ID 0405855
    Abandoned
  34. Larkin-Story Hazzard Mine
    Underground metal/non-metal · Indian-American Oil & Minerals Inc · MSHA ID 0404374
    Abandoned
  35. Lucky Chance Mine
    Underground metal/non-metal · Lucky Chance Mine · MSHA ID 0404375
    Abandoned
  36. Mc Mullen Sand & Gravel
    Surface metal/non-metal · Mc Mullen Sand & Gravel · MSHA ID 0403992
    Abandoned
  37. Morin & Morin Claims
    Surface metal/non-metal · Seneca Mining & Developing Company · MSHA ID 0404430
    Abandoned
  38. Pense Mine
    Underground metal/non-metal · Al Wasley · MSHA ID 0404822
    Abandoned
  39. Rich Bar Mine
    Surface metal/non-metal · Rich Bar Mining Company · MSHA ID 0404776
    Abandoned
  40. Rock-O Travertine Quarry
    Surface metal/non-metal · Rock-O · MSHA ID 0404125
    Abandoned
  41. Shoofly Mine
    Underground metal/non-metal · Harry Forcino · MSHA ID 0404204
    Abandoned
  42. Sunnyside Mine (Lee Marvin Drift)
    Underground metal/non-metal · Trans Waterways Usa Inc · MSHA ID 0404911
    Abandoned
  43. Sunnyside Placer
    Surface metal/non-metal · Avid Mining Company · MSHA ID 0404546
    Abandoned
  44. Surface Seneca Properties
    Surface metal/non-metal · Hilltop Mining Company Inc · MSHA ID 0404642
    Abandoned
  45. TREASURE CANYON LODE MINES
    Underground metal/non-metal · Treasure Canyon Enterprises Inc · MSHA ID 0405259
    Abandoned
  46. Twain Enterprises Incorporated
    Surface metal/non-metal · Twain Enterprises Inc · MSHA ID 0404969
    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.