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MSHA mine register by county

Mines in Imperial County, California

Imperial County, California has 65 mines on MSHA's register: 7 active, 4 intermittent, 54 abandoned. 1 miner has died and 792 accidents have been reported at these mines between 1983 and 2026. Inspectors have issued 1,266 citations.

Every mine MSHA has registered in Imperial 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 Imperial County →

Mines on register
65
Active
7
Fatalities on record
1
Citations issued
1,266
1 underground · 64 surface · 0 facilities 0 coal · 65 metal and non-metal 4 intermittent 54 abandoned 792 reported accidents, 1983–2026
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.
Imperial County, California · Population 179,319
0.3%
Mining share of county employment
$56,393
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
Granite Construction Company 6 0 0
GIBSON'S ALL AMERCIAN AGGREGATES, INC. 4 0 0
IMPERIAL VALLEY AGGREGATES LLC 3 2 0
PYRAMID CONSTRUCTION AND AGGREGATES, INC. 3 1 0
Superior Ready Mix Concrete L.P. 3 0 0
American Girl Mining Joint Venture 2 0 1
Elms Equipment Rental Inc 2 0 0
Massey Sand & Rock Company 2 0 0
Val-Rock Inc 2 0 0
Aggregate Products Inc 1 1 0
Mines in Imperial County65 on register
  1. Mesquite
    Surface metal/non-metal · Western Mesquite Mines, Inc. · MSHA ID 0404614
    Active
  2. PLASTER CITY QUARRY
    Surface metal/non-metal · United States Gypsum Company · MSHA ID 0400915
    Active
  3. API Pit
    Surface metal/non-metal · Aggregate Products Inc · MSHA ID 0404678
    Active
  4. Crushing Screening
    Surface metal/non-metal · Cal-Grade Inc · MSHA ID 0405237
    Active
  5. Frink
    Surface metal/non-metal · Imperial Valley Aggregates LLC · MSHA ID 0404770
    Active
  6. Ammex Site
    Surface metal/non-metal · Pyramid Construction and Aggregates, Inc. · MSHA ID 0405654
    Active
  7. Imperial Valley Aggregates
    Surface metal/non-metal · Imperial Valley Aggregates LLC · MSHA ID 0405850
    Active
  8. AMERICAN GIRL UNDERGROUND MINE/M
    Underground metal/non-metal · American Girl Mining Joint Venture · MSHA ID 0404816
    Abandoned
  9. PICACHO MINE
    Surface metal/non-metal · Chemgold Inc · MSHA ID 0404502
    Abandoned
  10. AMERICAN GIRL SURFACE MINE
    Surface metal/non-metal · American Girl Mining Joint Venture · MSHA ID 0404872
    Abandoned
  11. Oat Pit
    Surface metal/non-metal · Superior Ready Mix Concrete L P · MSHA ID 0405082
    Intermittent
  12. SHELL CANYON PIT
    Surface metal/non-metal · Val-Rock Inc · MSHA ID 0404701
    Abandoned
  13. Frink Pit
    Surface metal/non-metal · Superior Ready Mix Concrete L P · MSHA ID 0401910
    Intermittent
  14. Jimenez
    Surface metal/non-metal · Granite Construction Company · MSHA ID 0405516
    Abandoned
  15. El Centro
    Surface metal/non-metal · Granite Construction Company · MSHA ID 0405113
    Abandoned
  16. AMMEX
    Surface metal/non-metal · Granite Construction Company · MSHA ID 0404784
    Abandoned
  17. Portable Plant A
    Surface metal/non-metal · Romero General Construction Corp · MSHA ID 0405622
    Abandoned
  18. EL CENTRO PROCESSING
    Surface metal/non-metal · Superior Ready Mix Concrete L.P. · MSHA ID 0405142
    Intermittent
  19. EAST HIGHLINE
    Surface metal/non-metal · IMPERIAL VALLEY AGGREGATES LLC · MSHA ID 0401816
    Abandoned
  20. SHELL CANYON OCOTILLO PIT
    Surface metal/non-metal · PYRAMID CONSTRUCTION AND AGGREGATES, INC. · MSHA ID 0405070
    Abandoned
  21. EAST HIGHLINE #2
    Surface metal/non-metal · GIBSON'S ALL AMERCIAN AGGREGATES, INC. · MSHA ID 0405682
    Abandoned
  22. American Girl Mine East
    Surface metal/non-metal · Pyramid Construction and Aggregates Inc · MSHA ID 0405761
    Intermittent
  23. PORTABLE PLANT B
    Surface metal/non-metal · Diversified Materials · MSHA ID 0404968
    Abandoned
  24. Sidewinder Pit
    Surface metal/non-metal · Kiewit Pacific Co · MSHA ID 0405730
    Abandoned
  25. BROWN CLAY
    Surface metal/non-metal · Protech Minerals Inc · MSHA ID 0405400
    Abandoned
  26. GRANITE CONSTRUCTION CO
    Surface metal/non-metal · Granite Construction Company · MSHA ID 0404941
    Abandoned
  27. 3 C'S
    Surface metal/non-metal · Ne Calaz Minerals Ltd · MSHA ID 0405035
    Abandoned
  28. Ammex Aggregate #1
    Surface metal/non-metal · Ammex Aggregate Corp · MSHA ID 0405090
    Abandoned
  29. Beachline Pit
    Surface metal/non-metal · Merrill Corp · MSHA ID 0403733
    Abandoned
  30. Belle Of Portugal Mine
    Surface metal/non-metal · Imperial Mining Company · MSHA ID 0404857
    Abandoned
  31. Cherokee Load
    Surface metal/non-metal · Cherokee Milling & Mining · MSHA ID 0404376
    Abandoned
  32. Crusher Pit
    Surface metal/non-metal · Sundt Corp · MSHA ID 0404933
    Abandoned
  33. East Highline Pit No 2
    Surface metal/non-metal · All American Aggregates · MSHA ID 0404112
    Abandoned
  34. East Highline Plant No 2
    Surface metal/non-metal · All American Aggregates · MSHA ID 0405186
    Abandoned
  35. El Star
    Surface metal/non-metal · J R Gold Mining Company · MSHA ID 0404942
    Abandoned
  36. Elms Equipment Rental
    Surface metal/non-metal · Elms Equipment Rental Inc · MSHA ID 0404929
    Abandoned
  37. ELMS HIGHLINE SAND PIT
    Surface metal/non-metal · Elms Equipment Rental Inc · MSHA ID 0405369
    Abandoned
  38. FLOWING WELLS
    Surface metal/non-metal · Granite Construction Company · MSHA ID 0405115
    Abandoned
  39. Flowing Wells Pit
    Surface metal/non-metal · Curtis Construction Co & M G Curtis Co Inc · MSHA ID 0404308
    Abandoned
  40. Frink-West Side-Highline-Mt Signal
    Surface metal/non-metal · Lucky Engineering Contractors · MSHA ID 0404186
    Abandoned
  41. Glamis Pit
    Surface metal/non-metal · All American Aggregates · MSHA ID 0404113
    Abandoned
  42. High Line Sand Pit
    Surface metal/non-metal · Massey Sand & Rock Company · MSHA ID 0404063
    Abandoned
  43. Holtville Wash Plant
    Surface metal/non-metal · Blue Circle West · MSHA ID 0404955
    Abandoned
  44. Imperial Valley Mine
    Surface metal/non-metal · Continental Bullion Corp · MSHA ID 0404363
    Abandoned
  45. JACKSON GULCH
    Surface metal/non-metal · Orlosky Inc · MSHA ID 0405230
    Abandoned
  46. Modoc
    Surface metal/non-metal · Modoc Mining Company · MSHA ID 0405243
    Abandoned
  47. Morisson Mine
    Surface metal/non-metal · Mineral Management Inc · MSHA ID 0404368
    Abandoned
  48. Oat Pit
    Surface metal/non-metal · Imperial County Road Department · MSHA ID 0404290
    Abandoned
  49. Occidental Group
    Surface metal/non-metal · ROSE MINE LTD. · MSHA ID 0405922
    Abandoned
  50. Ocotillo Pit
    Surface metal/non-metal · Massey Sand & Rock Company · MSHA ID 0403539
    Abandoned
  51. Ocotillo Plant
    Surface metal/non-metal · William H Raley Company Inc · MSHA ID 0403735
    Abandoned
  52. Palo Verde Quarry
    Surface metal/non-metal · Warnerton Gravel Company · MSHA ID 0404392
    Abandoned
  53. Palo Verde Quarry
    Surface metal/non-metal · Burchett & Good Contractors Inc · MSHA ID 0405130
    Abandoned
  54. Pilot Knob
    Surface metal/non-metal · Cooper & Sons Inc · MSHA ID 0405044
    Abandoned
  55. Pilot Knob Quarry
    Surface metal/non-metal · C & C Construction Corp · MSHA ID 0404774
    Abandoned
  56. PORTABLE CRUSHER
    Surface metal/non-metal · D L C · MSHA ID 0405257
    Abandoned
  57. Portable Screen
    Surface metal/non-metal · R T Pinner & Son Inc · MSHA ID 0403734
    Abandoned
  58. Schaefer Pit
    Surface metal/non-metal · Haynes & Schaefer · MSHA ID 0404187
    Abandoned
  59. Shank
    Surface metal/non-metal · Granite Construction Company · MSHA ID 0405114
    Abandoned
  60. SHELL CANYON PIT
    Surface metal/non-metal · Val-Rock Inc · MSHA ID 0404071
    Abandoned
  61. Shoveler Annex
    Surface metal/non-metal · California Portland Cement Company · MSHA ID 0403571
    Abandoned
  62. THE STANDARD GYPSUM MINE
    Surface metal/non-metal · Eco Solutions · MSHA ID 0405304
    Abandoned
  63. Tierra Tile Pit
    Surface metal/non-metal · Tierra Tile · MSHA ID 0404720
    Abandoned
  64. U S Bureau Of Reclamation Pits
    Surface metal/non-metal · U S Bureau Of Reclamation · MSHA ID 0404404
    Abandoned
  65. Wonderstone Plant
    Surface metal/non-metal · Massey Sand & Rock Company · MSHA ID 0404951
    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.