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MSHA mine register by county

Mines in Sweetwater County, Wyoming

Sweetwater County, Wyoming has 67 mines on MSHA's register: 11 active, 6 intermittent, 50 abandoned. 13 are coal mines and 54 metal or non-metal. 16 miners have died and 6,566 accidents have been reported at these mines between 1983 and 2026. Inspectors have issued 17,759 citations.

Every mine MSHA has registered in Sweetwater 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 Sweetwater County →

Mines on register
67
Active
11
Fatalities on record
16
Citations issued
17,759
10 underground · 53 surface · 4 facilities 13 coal · 54 metal and non-metal 6 intermittent 50 abandoned 6,566 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.
Sweetwater County, Wyoming · Population 41,786
13.3%
Mining share of county employment
$76,464
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
Searle Brothers Construction Company 4 3 0
Suncore Construction and Materials Inc. 3 1 0
Bridger Coal Company 2 1 5
Black Butte Coal Company 2 1 2
Tata Chemicals (Soda Ash) Partners LLC 2 1 2
Eagle Concrete Products Inc 2 0 0
Gunn-Quealy Coal Company 2 0 0
Lee Sand and Gravel, Inc 2 0 0
Lewis and Lewis 2 0 0
Peter Kiewit Sons' Company 2 0 0
Mines in Sweetwater County67 on register
  1. WE Soda @ WESTVACO
    Underground metal/non-metal · WE Soda Alkali, LLC · MSHA ID 4800152
    Active
  2. Tata Chemicals Mine
    Underground metal/non-metal · Tata Chemicals (Soda Ash) Partners LLC · MSHA ID 4800155
    Active
  3. American Soda LLC
    Underground metal/non-metal · American Soda LLC · MSHA ID 4801295
    Active
  4. Big Island Mine & Refinery
    Underground metal/non-metal · Sisecam Wyoming, LLC · MSHA ID 4800154
    Active
  5. Jim Bridger Mine
    Surface coal · Bridger Coal Company · MSHA ID 4800677
    Active
  6. Black Butte And Leucite Hills Mines
    Surface coal · Black Butte Coal Company · MSHA ID 4801180
    Active
  7. Mobile Crusher - 76-4034
    Surface metal/non-metal · Suncore Construction and Materials Inc. · MSHA ID 4800284
    Active
  8. Kolberg 271B
    Surface metal/non-metal · Searle Brothers Construction Company · MSHA ID 4801496
    Active
  9. Plattoga Pit
    Surface metal/non-metal · Plattoga Holdings, LLC · MSHA ID 4801844
    Active
  10. 2005 Metso Lokotrack LT 1213 Impact Crus
    Surface metal/non-metal · Searle Brothers Construction Co. · MSHA ID 4801920
    Active
  11. 2016 Metso Nordbert C120 Jaw Crusher Pla
    Surface metal/non-metal · Searle Brothers Construction Co. · MSHA ID 4801921
    Active
  12. Bridger Underground Coal Mine
    Underground coal · Bridger Coal Company · MSHA ID 4801646
    Abandoned and Sealed
  13. Tata Chemicals Mill
    Surface metal/non-metal · Tata Chemicals (Soda Ash) Partners · MSHA ID 4801497
    Abandoned
  14. FMC @ GRANGER
    Underground metal/non-metal · FMC Corp · MSHA ID 4800639
    Abandoned
  15. Stansbury Mine
    Underground coal · New Stansbury Coal Company LLC · MSHA ID 4801012
    Abandoned and Sealed
  16. Swanson Mine
    Underground coal · Cougar Coal Company · MSHA ID 4800082
    Abandoned and Sealed
  17. Portable Crusher Unit F
    Surface metal/non-metal · LeGrand Johnson · MSHA ID 4202042
    Intermittent
  18. Lewis & Lewis, Portable 01
    Surface metal/non-metal · Lewis and Lewis · MSHA ID 4801482
    Abandoned
  19. Leucite Hills Mine
    Surface coal · Black Butte Coal Company · MSHA ID 4801121
    Abandoned and Sealed
  20. ADDCAR System 18 HWM Serial No 23018
    Surface coal · Eagle Highwall Mining Systems, LLC · MSHA ID 4801645
    Abandoned
  21. Leucite Mine #11
    Surface metal/non-metal · Searle Bros. Construction Company · MSHA ID 4801573
    Intermittent
  22. Layos Pit 564
    Surface metal/non-metal · Suncore Construction and Materials Inc. · MSHA ID 4801671
    Abandoned
  23. Sweetwater Uranium Project
    Surface metal/non-metal · Minerals Exploration Company · MSHA ID 4801181
    Abandoned
  24. PIONEER TRAILS PIT #565
    Surface metal/non-metal · Suncore Construction and Materials Inc. · MSHA ID 4801440
    Intermittent
  25. Damifino Pit
    Surface metal/non-metal · Kasler Corp · MSHA ID 4801424
    Abandoned
  26. Split Rock Project
    Surface metal/non-metal · N A Degerstrom Inc · MSHA ID 4800559
    Abandoned
  27. PCI
    Surface metal/non-metal · Pallesen Const. Inc · MSHA ID 4801758
    Abandoned
  28. 2001 BL Pegson Crusher
    Surface metal/non-metal · H. B. Lee Construction Co., Inc. · MSHA ID 4801717
    Intermittent
  29. Taliaferro
    Surface metal/non-metal · IHC Scott · MSHA ID 4801851
    Abandoned
  30. Crusher #1
    Surface metal/non-metal · Green River Stone & Crushing · MSHA ID 4801672
    Abandoned
  31. Crusher #1
    Surface metal/non-metal · Eagle Concrete Products Inc · MSHA ID 4801354
    Abandoned
  32. L & L Pit-Green River
    Surface metal/non-metal · IPE Aggregate · MSHA ID 4801858
    Abandoned
  33. Wylie Pit
    Surface metal/non-metal · Wylie Construction Inc. · MSHA ID 4801630
    Abandoned
  34. Crusher #1
    Surface metal/non-metal · Cole Lumber & Construction Inc · MSHA ID 4801683
    Abandoned
  35. 2004 Chieftan Screener
    Surface metal/non-metal · Lee Sand and Gravel, Inc · MSHA ID 4801808
    Intermittent
  36. Rocky Mountain Coal Company, LLC
    Surface coal · Rocky Mountain Coal Company, LLC · MSHA ID 4801725
    Abandoned
  37. Jaure Pit
    Surface metal/non-metal · Hyland Enterprises Inc · MSHA ID 4801651
    Abandoned
  38. Rocks In Stones #1
    Surface metal/non-metal · Rocks In Stones, LLC · MSHA ID 4801738
    Abandoned
  39. 2003 BL Pegson Crusher
    Surface metal/non-metal · Lee Sand and Gravel, Inc · MSHA ID 4801810
    Abandoned
  40. Black Butte Interchange-Project #56
    Surface metal/non-metal · Peter Kiewit Sons' Company · MSHA ID 4801242
    Abandoned
  41. Bo'S Rock Pit #1
    Surface metal/non-metal · Bo'S Excavating Inc · MSHA ID 4801432
    Abandoned
  42. Buzzard Pit
    Surface metal/non-metal · Concrete Products Co-Div/Gibbons & Reed Company · MSHA ID 4801270
    Abandoned
  43. Cherokee Hill Pit
    Surface metal/non-metal · Wyoming Highway Department · MSHA ID 4801324
    Abandoned
  44. Crusher #1
    Surface metal/non-metal · Terry R. Pitt Construction Inc. · MSHA ID 4801842
    Abandoned
  45. Dry Claims Joint Venture
    Surface metal/non-metal · Electro-Win Corp · MSHA ID 4801463
    Abandoned
  46. Fmc Gravel Pit #6019
    Surface metal/non-metal · Peter Kiewit Sons' Company · MSHA ID 4801267
    Abandoned
  47. Green River Perlite Processing Plant
    Facility metal/non-metal · Harborlite Corp · MSHA ID 4801423
    Abandoned
  48. Green River Plant
    Facility metal/non-metal · Western Perlite Corp · MSHA ID 4801425
    Abandoned
  49. HARDROCK CONCRETE WASH PLANT
    Surface metal/non-metal · Hardrock Concrete Lc · MSHA ID 4801546
    Abandoned
  50. Huntley Pit
    Surface metal/non-metal · Huntley Construction Company · MSHA ID 4800279
    Abandoned
  51. Kleeman MR130 Crusher #1
    Surface metal/non-metal · Cowboy Gravel Inc. · MSHA ID 4801909
    Intermittent
  52. Labarge Pit Or Underpass Pit
    Surface metal/non-metal · Mc Garvin-Moberly Construction Company · MSHA ID 4800819
    Abandoned
  53. Labarge Road Pit
    Surface metal/non-metal · Sunrise Construction Company Inc · MSHA ID 4801245
    Abandoned
  54. Leucite Hills
    Surface metal/non-metal · Pacific Minerals Inc · MSHA ID 4801338
    Abandoned
  55. Long Canyon Mine
    Surface coal · Sunoco Energy Development Company · MSHA ID 4801118
    Abandoned and Sealed
  56. Lucite #1
    Surface metal/non-metal · Lucite Inc · MSHA ID 4801460
    Abandoned
  57. Rainbow #7
    Underground coal · Gunn-Quealy Coal Company · MSHA ID 4800091
    Abandoned
  58. Rainbow No 7 Prep Plant
    Facility coal · Gunn-Quealy Coal Company · MSHA ID 4800709
    Abandoned
  59. Rainbow No 8 Mine
    Underground coal · Columbine Mining Company · MSHA ID 4800661
    Abandoned
  60. Red Arm Mine
    Facility metal/non-metal · Calcitron Metals Inc · MSHA ID 4801484
    Abandoned
  61. Red Desert Project
    Surface metal/non-metal · Union Minerals Exploration · MSHA ID 4801114
    Abandoned
  62. Reliance Coal Strip
    Surface coal · Rocky Mountain Associated · MSHA ID 4800187
    Abandoned
  63. Section 20 Pit
    Surface metal/non-metal · Clark'S Ready-Mix & Construction Inc · MSHA ID 4801171
    Abandoned
  64. Sims Corporation Screening Plant
    Surface metal/non-metal · Sims Corp · MSHA ID 4801446
    Abandoned
  65. Sunrise Crusher
    Surface metal/non-metal · Sunrise Construction Company Inc · MSHA ID 4801277
    Abandoned
  66. Sweetwater Mine
    Surface metal/non-metal · Water Remediation Technology, LLC · MSHA ID 4801629
    Abandoned
  67. Wash Plant #1
    Surface metal/non-metal · Eagle Concrete Products Inc · MSHA ID 4801437
    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 WyomingAll 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.