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MSHA mine register by county

Mines in Inyo County, California

Inyo County, California has 105 mines on MSHA's register: 9 active, 3 intermittent, 93 abandoned. 2 miners have died and 479 accidents have been reported at these mines between 1983 and 2025. Inspectors have issued 2,346 citations.

Every mine MSHA has registered in Inyo 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 Inyo County →

Mines on register
105
Active
9
Fatalities on record
2
Citations issued
2,346
25 underground · 68 surface · 12 facilities 0 coal · 105 metal and non-metal 3 intermittent 93 abandoned 479 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.
Inyo County, California · Population 18,803
1.7%
Mining share of county employment
$72,432
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
Pfizer Inc 15 0 0
U S Borax Inc 3 0 0
American Borate Company 2 0 2
7/11 Materials Inc 2 1 0
Big Pine Distributors 2 0 0
Blue Range Mining Company L P 2 0 0
Cr Briggs 2 0 0
Delthe Resources Corp 2 0 0
GLOBAL PUMICE, LLC 2 2 0
Granite Construction Company 2 0 0
Mines in Inyo County105 on register
  1. Global Pumice Mine - Olancha
    Surface metal/non-metal · GLOBAL PUMICE, LLC · MSHA ID 0404783
    Active
  2. Makayla
    Surface metal/non-metal · Global Pumice, LLC · MSHA ID 0404602
    Active
  3. Dolomite Mine
    Surface metal/non-metal · F W Aggregate Inc · MSHA ID 0400226
    Active
  4. Twin Mountain Rock
    Surface metal/non-metal · Twin Mountain Rock Venture · MSHA ID 0403623
    Active
  5. FISH SPRINGS QUARRY
    Surface metal/non-metal · American Perlite Company · MSHA ID 0401140
    Active
  6. 7/11 Materials - Coyote Valley Aggregate
    Surface metal/non-metal · 7/11 Materials Inc · MSHA ID 0405570
    Active
  7. Panamint Valley Limestone Quarry
    Surface metal/non-metal · PVL Inc. · MSHA ID 0400275
    Active
  8. Beck Mine
    Surface metal/non-metal · U.S. Iron, LLC. · MSHA ID 0405815
    Active
  9. Fort Independence Quarry
    Surface metal/non-metal · Grinding Rock Aggregates · MSHA ID 0405959
    Active
  10. Billie Mine
    Underground metal/non-metal · American Borate Company · MSHA ID 0404218
    Abandoned
  11. Briggs Mine
    Surface metal/non-metal · DV Natural Resources, LLC · MSHA ID 0405276
    Abandoned
  12. PINE CREEK MILL
    Facility metal/non-metal · Avocet Tungsten Inc · MSHA ID 0404599
    Abandoned
  13. Five Bridges Aggregate Plant
    Surface metal/non-metal · Granite Construction Company · MSHA ID 0401869
    Intermittent
  14. Laws Mill
    Facility metal/non-metal · Standard Industrial Minerals Inc · MSHA ID 0402653
    Abandoned
  15. 7/11 Materials - Adams Pit
    Surface metal/non-metal · 7/11 Materials Inc · MSHA ID 0404777
    Abandoned
  16. Sidehill Mine
    Surface metal/non-metal · VM Buyer LLC · MSHA ID 0400581
    Abandoned
  17. Keystone Mine
    Underground metal/non-metal · Keystone Mining Company · MSHA ID 0404390
    Abandoned
  18. Snow Cap Mine & Mill
    Facility metal/non-metal · Sunshine Mining Company · MSHA ID 0404871
    Abandoned
  19. Snowcap Mine
    Surface metal/non-metal · Lost Dutchman Construction Inc · MSHA ID 0404651
    Abandoned
  20. Emperor Stockwell Mine
    Underground metal/non-metal · Nomad Mining & Milling Company · MSHA ID 0404710
    Abandoned
  21. GERSTLEY MINE
    Facility metal/non-metal · U S Borax Inc · MSHA ID 0405300
    Abandoned
  22. Owens Lake Gold
    Facility metal/non-metal · Keystone Mining Company · MSHA ID 0404737
    Abandoned
  23. Portable Crusher #1
    Surface metal/non-metal · Barnard Construction Company Inc · MSHA ID 0405777
    Abandoned
  24. Hot Creek Mine
    Surface metal/non-metal · Standard Industrial Minerals Inc · MSHA ID 0404231
    Abandoned
  25. Owens Lake Mine
    Surface metal/non-metal · U S Borax Inc · MSHA ID 0402834
    Intermittent
  26. Bishop Mill
    Facility metal/non-metal · 0877887 BC LTD · MSHA ID 0404626
    Abandoned
  27. Eclipse Mine
    Underground metal/non-metal · Pfizer Inc · MSHA ID 0401098
    Abandoned
  28. Panamint Mine
    Surface metal/non-metal · Cyprus Mines Corp · MSHA ID 0401127
    Abandoned
  29. Reward-Brown Monster
    Underground metal/non-metal · International Recovery Inc · MSHA ID 0404558
    Abandoned
  30. Radcliff Mine
    Underground metal/non-metal · Pruett Ballarat Inc · MSHA ID 0405839
    Abandoned
  31. OLANCHA MILL
    Facility metal/non-metal · Big Pine Distributors · MSHA ID 0402620
    Abandoned
  32. KMI Zeolite Mine
    Surface metal/non-metal · KMI Zeolite Inc · MSHA ID 0405558
    Intermittent
  33. CR Briggs Underground
    Underground metal/non-metal · C.R. Briggs · MSHA ID 0405497
    Abandoned
  34. Crater & Kathy Mine
    Surface metal/non-metal · American Sulfur Products · MSHA ID 0405063
    Abandoned
  35. Firestone Mill
    Facility metal/non-metal · Firestone Mining Industries Inc · MSHA ID 0403732
    Abandoned
  36. KIM-CRETE 1 & E
    Surface metal/non-metal · Big Gun Mining Company · MSHA ID 0404632
    Abandoned
  37. Lone Pine Pit & Mill
    Surface metal/non-metal · Lone Pine Sand & Gravel · MSHA ID 0402177
    Abandoned
  38. PORTABLE #1
    Surface metal/non-metal · Hodge Construction Company · MSHA ID 0405236
    Abandoned
  39. White Point
    Underground metal/non-metal · Pfizer Inc · MSHA ID 0404645
    Abandoned
  40. Red Hill Quarry
    Surface metal/non-metal · Atlas Mineral Products Corp · MSHA ID 0405737
    Abandoned
  41. Santa Barbara Portable
    Surface metal/non-metal · Granite Construction Company · MSHA ID 0405811
    Abandoned
  42. Canica Crusher #929-Lone Pine
    Surface metal/non-metal · BJ Rees's Enterprise · MSHA ID 0405674
    Abandoned
  43. California Hectorite Pit
    Surface metal/non-metal · BYK USA LLC · MSHA ID 0405884
    Abandoned
  44. Portable plant B
    Surface metal/non-metal · Skanska USA Civil West California District, Inc. · MSHA ID 0405741
    Abandoned
  45. Acme Mine
    Underground metal/non-metal · Pfizer Inc · MSHA ID 0401092
    Abandoned
  46. Alliance Group
    Surface metal/non-metal · America'S Finest Talc Company · MSHA ID 0404391
    Abandoned
  47. Apex Excelior Mine
    Underground metal/non-metal · Pfizer Inc · MSHA ID 0401093
    Abandoned
  48. Ash Meadows Pit
    Surface metal/non-metal · East West Minerals Inc · MSHA ID 0405026
    Abandoned
  49. Ash Meadows Pit & Plant
    Facility metal/non-metal · Anaconda Minerals Company · MSHA ID 0404369
    Abandoned
  50. B J Mine
    Surface metal/non-metal · B J V Corp · MSHA ID 0405091
    Abandoned
  51. Beagle Sam Mine
    Surface metal/non-metal · Delthe Resources Corp · MSHA ID 0404474
    Abandoned
  52. Blacksprings Clay Pit
    Surface metal/non-metal · Blacksprings Clay Company · MSHA ID 0405059
    Abandoned
  53. Bonny Pit
    Surface metal/non-metal · Pfizer Inc · MSHA ID 0401094
    Abandoned
  54. Boraxo Mill
    Surface metal/non-metal · American Borate Company · MSHA ID 0401645
    Abandoned
  55. Bostrum Talc
    Underground metal/non-metal · Cal-Vada Mining · MSHA ID 0404892
    Abandoned
  56. Briggs
    Surface metal/non-metal · Cr Briggs · MSHA ID 0404860
    Abandoned
  57. C 1 Clay Pit
    Surface metal/non-metal · Pfizer Inc · MSHA ID 0404342
    Abandoned
  58. Cal Pumice Sand & Gravel
    Surface metal/non-metal · Cal Pumice Inc · MSHA ID 0404661
    Abandoned
  59. California Clay Pit
    Surface metal/non-metal · Imv-Div/Floridin Company · MSHA ID 0405170
    Abandoned
  60. Comet Pit
    Surface metal/non-metal · Pfizer Inc · MSHA ID 0404341
    Abandoned
  61. Coso Mine
    Surface metal/non-metal · American Pumice Products Inc · MSHA ID 0404245
    Abandoned
  62. Cottonwood Batch Plant
    Surface metal/non-metal · City Of L A Department Of Water & Power · MSHA ID 0404524
    Abandoned
  63. CRYSTAL SPRINGS CANYON
    Surface metal/non-metal · Canyon Mines & Minerals · MSHA ID 0404743
    Abandoned
  64. Darwin Mines
    Surface metal/non-metal · Blue Range Mining Company L P · MSHA ID 0404495
    Abandoned
  65. Darwin Operation
    Facility metal/non-metal · Darwin Mineral Ventures L P · MSHA ID 0405162
    Abandoned
  66. Darwin U G
    Surface metal/non-metal · Blue Range Mining Company L P · MSHA ID 0405021
    Abandoned
  67. Death Valley Area Mines
    Surface metal/non-metal · Pfizer Inc · MSHA ID 0400585
    Abandoned
  68. E.W.T
    Surface metal/non-metal · Big Pine Distributors · MSHA ID 0405394
    Abandoned
  69. Frisco
    Surface metal/non-metal · Tonkin'S Hauling · MSHA ID 0401115
    Abandoned
  70. GERSTLEY MINE
    Underground metal/non-metal · U S Borax Inc · MSHA ID 0404953
    Abandoned
  71. Goldbug Mine
    Underground metal/non-metal · Goldbug Mines Inc · MSHA ID 0404531
    Abandoned
  72. Grantham Mine
    Underground metal/non-metal · Pfizer Inc · MSHA ID 0402656
    Abandoned
  73. Grantham Pit
    Surface metal/non-metal · Pfizer Inc · MSHA ID 0404625
    Abandoned
  74. Grey Eagle
    Underground metal/non-metal · Ibis · MSHA ID 0405620
    Abandoned
  75. Hiatt Sand & Gravel
    Surface metal/non-metal · Hiatt Sand & Gravel · MSHA ID 0401794
    Abandoned
  76. Jackass Mine
    Underground metal/non-metal · Delthe Resources Corp · MSHA ID 0404329
    Abandoned
  77. Keeler Mill
    Facility metal/non-metal · Cyprus Industrial Minerals Company · MSHA ID 0401124
    Abandoned
  78. KIM-CRETE PUMICE MINE NO. 3&4
    Surface metal/non-metal · California Lightweight Pumice Inc · MSHA ID 0405332
    Abandoned
  79. Kurias Mine
    Surface metal/non-metal · Patchwork Corp · MSHA ID 0404928
    Abandoned
  80. Mammoth Mine
    Underground metal/non-metal · Pfizer Inc · MSHA ID 0404265
    Abandoned
  81. Mile High Mine Group 7
    Surface metal/non-metal · Ed Kivett · MSHA ID 0403307
    Abandoned
  82. Modoc Group Mining Properties
    Underground metal/non-metal · Panamint Mining Co & Defense Resources Co · MSHA ID 0404519
    Abandoned
  83. Modoc Mine Open Pit
    Surface metal/non-metal · Panamint Mining Co & Defense Resources Co · MSHA ID 0404551
    Abandoned
  84. Mongolian Pit
    Surface metal/non-metal · Pfizer Inc · MSHA ID 0404264
    Abandoned
  85. Montecito Mill
    Facility metal/non-metal · Montecito Mining Company · MSHA ID 0402871
    Abandoned
  86. National Cinder And Stone Pit And Mill
    Surface metal/non-metal · National Cinder & Stone Inc · MSHA ID 0403625
    Abandoned
  87. Olancha White Pumice
    Surface metal/non-metal · Olancha White Pumice Products · MSHA ID 0405104
    Abandoned
  88. Partly Mine
    Surface metal/non-metal · Independence Mining Corp · MSHA ID 0404905
    Abandoned
  89. Pearl (1) Or (2) Mine
    Underground metal/non-metal · Ams Inc Of Nevada · MSHA ID 0404092
    Abandoned
  90. Pebbles
    Surface metal/non-metal · Inyo Marble Company · MSHA ID 0405012
    Abandoned
  91. Rex Montis Mine
    Underground metal/non-metal · Rex Montis Silver Company · MSHA ID 0404366
    Abandoned
  92. RICHMARK CANYON TALC INC.
    Surface metal/non-metal · Richmark Canyon Talc Inc · MSHA ID 0405327
    Abandoned
  93. Rogers Mine
    Surface metal/non-metal · Pfizer Inc · MSHA ID 0404610
    Abandoned
  94. Round Valley Mine
    Underground metal/non-metal · Inspiration Mines Inc · MSHA ID 0404581
    Abandoned
  95. Sericite Pit
    Surface metal/non-metal · Pfizer Inc · MSHA ID 0404343
    Abandoned
  96. Superior
    Surface metal/non-metal · Pfizer Inc · MSHA ID 0401103
    Abandoned
  97. T-Rock
    Surface metal/non-metal · T-Rock Products Inc · MSHA ID 0405882
    Abandoned
  98. Thompson Mine
    Underground metal/non-metal · Montecito Mining Company · MSHA ID 0402522
    Abandoned
  99. Trinity Mine
    Underground metal/non-metal · Okuniewicz Mining Company · MSHA ID 0405109
    Abandoned
  100. Warm Springs Mine
    Surface metal/non-metal · Manville Products Corp · MSHA ID 0401077
    Abandoned
  101. Water Canyon
    Surface metal/non-metal · Tuma Corp · MSHA ID 0404532
    Abandoned
  102. White Eagle Mine
    Underground metal/non-metal · Ibis · MSHA ID 0401113
    Abandoned
  103. White Swan Mine
    Surface metal/non-metal · Elmar F Mancini · MSHA ID 0404541
    Abandoned
  104. Wyoming Mine
    Underground metal/non-metal · Mineop Corp · MSHA ID 0404512
    Abandoned
  105. Zodiac
    Surface metal/non-metal · Zodiac Investment Inc · MSHA ID 0404815
    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.