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

Mines in Calaveras County, California

Calaveras County, California has 41 mines on MSHA's register: 1 active, 40 abandoned. 1 miner has died and 124 accidents have been reported at these mines between 1983 and 2018. Inspectors have issued 503 citations.

Every mine MSHA has registered in Calaveras 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 Calaveras County →

Mines on register
41
Active
1
Fatalities on record
1
Citations issued
503
12 underground · 24 surface · 5 facilities 0 coal · 41 metal and non-metal 40 abandoned 124 reported accidents, 1983–2018
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.
Calaveras County, California · Population 45,995
0.3%
Mining share of county employment
$79,877
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
Flintkote Company 2 0 0
Foothill Materials, Inc. 2 1 0
George Reed Inc 2 0 0
Troy Gold Industries Ltd 2 0 0
Western Source 2 0 0
7/11 Materials Inc 1 0 1
All Rock 1 0 0
Bedford Aggregates 1 0 0
Calaveras Asbestos Ltd 1 0 0
Calaveras Cement Company 1 0 0
Mines in Calaveras County41 on register
  1. HOGAN QUARRY
    Surface metal/non-metal · Foothill Materials, Inc. · MSHA ID 0404819
    Active
  2. 7/11 Materials Inc-Robie Ranch
    Surface metal/non-metal · 7/11 Materials Inc · MSHA ID 0404243
    Abandoned
  3. ROYAL MOUNTAIN KING
    Surface metal/non-metal · Meridian Gold Company · MSHA ID 0404925
    Abandoned
  4. Carson Hill Rock Products
    Surface metal/non-metal · Carson Hill Rock Products · MSHA ID 0404792
    Abandoned
  5. All Rock
    Surface metal/non-metal · All Rock · MSHA ID 0405172
    Abandoned
  6. Calaveras Asbestos Ltd Mine & Mill
    Facility metal/non-metal · Calaveras Asbestos Ltd · MSHA ID 0401061
    Abandoned
  7. San Andreas Aggregates
    Surface metal/non-metal · Martin Marietta Northern California Aggregates,LLC · MSHA ID 0400539
    Abandoned
  8. Calaveras Asbestos Ltd (Pit)
    Surface metal/non-metal · Calaveras Natural Resources Inc · MSHA ID 0402547
    Abandoned
  9. JOHN W. HERTZIG
    Surface metal/non-metal · John W Hertzig · MSHA ID 0401961
    Abandoned
  10. REDHILL MINE
    Surface metal/non-metal · Western Source · MSHA ID 0404395
    Abandoned
  11. Blazing Star Mill
    Facility metal/non-metal · Gold Rock Industries Ltd · MSHA ID 0404242
    Abandoned
  12. TOYON MILL
    Facility metal/non-metal · Western Source · MSHA ID 0404490
    Abandoned
  13. MCCARTY PIT
    Surface metal/non-metal · Foothill Materials, Inc. · MSHA ID 0405200
    Abandoned
  14. Chili Gulch Rock
    Surface metal/non-metal · Kellog Creek Aggregates Inc · MSHA ID 0404909
    Abandoned
  15. Blackstone Mine
    Underground metal/non-metal · Richard Chilson Owner · MSHA ID 0404064
    Abandoned
  16. Buena Vista Mine
    Underground metal/non-metal · Robert A Dubois · MSHA ID 0404572
    Abandoned
  17. Calaveras Rock
    Surface metal/non-metal · Harold O Parsons · MSHA ID 0404525
    Abandoned
  18. Camp Connell Rock Quarry
    Surface metal/non-metal · Claude C Wood Company · MSHA ID 0404401
    Abandoned
  19. Campo Seco Pit
    Surface metal/non-metal · Flintkote Company · MSHA ID 0400943
    Abandoned
  20. Cataract Quarry
    Facility metal/non-metal · Genstar Cement Company · MSHA ID 0400432
    Abandoned
  21. COPPER ROCK SAN ANDREAS PIT
    Surface metal/non-metal · Copper Rock Jv · MSHA ID 0405361
    Abandoned
  22. E.I.G. MINE
    Surface metal/non-metal · Hi-Tech Environmental Products Llc · MSHA ID 0402864
    Abandoned
  23. Flume House Mine
    Underground metal/non-metal · O'Hara Resources Ltd · MSHA ID 0404466
    Abandoned
  24. Foothills Pit
    Surface metal/non-metal · Flintkote Company · MSHA ID 0400696
    Abandoned
  25. Fricot Mine
    Underground metal/non-metal · Charles Valente · MSHA ID 0403907
    Abandoned
  26. Grand Prize Mine
    Underground metal/non-metal · Grand Prize Mine · MSHA ID 0404611
    Abandoned
  27. Jackson Valley Open Pit Lignite Mining
    Surface metal/non-metal · Ione Energy Inc · MSHA ID 0404893
    Abandoned
  28. Lloyd Mine
    Underground metal/non-metal · Malkuriam Natural Resources Inc · MSHA ID 0404573
    Abandoned
  29. Lloyd Mine
    Underground metal/non-metal · High Sierras Resource Management Inc · MSHA ID 0404613
    Abandoned
  30. Miller Mine
    Underground metal/non-metal · Miller Mining Company Inc · MSHA ID 0404295
    Abandoned
  31. Mina Rica
    Underground metal/non-metal · Troy Gold Industries Ltd · MSHA ID 0404320
    Abandoned
  32. Mokelumne Hill Pit And Mill
    Surface metal/non-metal · George Reed Inc · MSHA ID 0402084
    Abandoned
  33. Reed Lava Rock Quarry
    Surface metal/non-metal · George Reed Inc · MSHA ID 0403369
    Abandoned
  34. Robison Acosta & Blanton Port. Rock Crus
    Surface metal/non-metal · Robison Acosta Blanton Portable Rock Crushing · MSHA ID 0405231
    Abandoned
  35. San Andreas Cement Plant
    Facility metal/non-metal · Calaveras Cement Company · MSHA ID 0402272
    Abandoned
  36. Sonora Green Quarry
    Surface metal/non-metal · Bedford Aggregates · MSHA ID 0402349
    Abandoned
  37. Sonora Yellow Quarry
    Surface metal/non-metal · Sonora Aggregates Corp · MSHA ID 0402348
    Abandoned
  38. Spence Ranch Mill
    Surface metal/non-metal · William Spence · MSHA ID 0403994
    Abandoned
  39. Union Mine
    Underground metal/non-metal · Joseph Folsom · MSHA ID 0403719
    Abandoned
  40. Woodhouse Mine
    Underground metal/non-metal · Troy Gold Industries Ltd · MSHA ID 0404523
    Abandoned
  41. Yellow Aster
    Underground metal/non-metal · Yellow Aster Mining Company · MSHA ID 0404722
    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.