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MSHA mine register by county

Mines in San Juan County, Colorado

San Juan County, Colorado has 35 mines on MSHA's register: 35 abandoned. 5 miners have died and 259 accidents have been reported at these mines between 1983 and 1993. Inspectors have issued 16 citations.

Every mine MSHA has registered in San Juan 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 San Juan County →

Mines on register
35
Active
0
Fatalities on record
5
Citations issued
16
24 underground · 5 surface · 6 facilities 0 coal · 35 metal and non-metal 35 abandoned 259 reported accidents, 1983–1993
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.
San Juan County, Colorado · Population 690
0.0%
Mining share of county employment
$73,889
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
Sunnyside Gold Corp 2 0 4
Noranda Exploration Inc 2 0 0
Sultan Mountain Mine 2 0 0
Gold King Mines Corp 1 0 1
Animas Aggregate Supply, LLC 1 0 0
Animas Canyon Mining Company 1 0 0
Arrigo Milling & Mining 1 0 0
Asamera Minerals (Us) Inc 1 0 0
Auburn Mining Corp 1 0 0
Bakers Park Mining & Milling Company 1 0 0
Mines in San Juan County35 on register
  1. Sunnyside Mine/Mayflower Mill
    Underground metal/non-metal · Sunnyside Gold Corp · MSHA ID 0500417
    Abandoned
  2. Gold King Mine
    Underground metal/non-metal · Gold King Mines Corp · MSHA ID 0504057
    Abandoned
  3. Sultan Mountain Mine
    Underground metal/non-metal · Sultan Mountain Mine · MSHA ID 0503740
    Abandoned
  4. Mayflower Mill
    Facility metal/non-metal · Sunnyside Gold Corp · MSHA ID 0503841
    Abandoned
  5. PRIDE OF THE WEST ML SILVER WING CO. INC
    Facility metal/non-metal · SILVER WING CO., INC. · MSHA ID 0503760
    Abandoned
  6. Ensle'S Prospect
    Underground metal/non-metal · Wide West Inc/Burbank*Gold Ltd · MSHA ID 0504403
    Abandoned
  7. Little Maude
    Underground metal/non-metal · Little Maude Inc · MSHA ID 0503081
    Abandoned
  8. Silverton #1
    Surface metal/non-metal · Brian Fullmer Construction LLC · MSHA ID 0504903
    Abandoned
  9. Anglo Saxon #2
    Underground metal/non-metal · Pandora Mining Company · MSHA ID 0503091
    Abandoned
  10. Animas Aggregate Supply, LLC
    Surface metal/non-metal · Animas Aggregate Supply, LLC · MSHA ID 0505137
    Abandoned
  11. Auburn Mine
    Underground metal/non-metal · Auburn Mining Corp · MSHA ID 0503087
    Abandoned
  12. Bakers Park Mill
    Facility metal/non-metal · Bakers Park Mining & Milling Company · MSHA ID 0502549
    Abandoned
  13. Barlow Pit
    Surface metal/non-metal · Hilco Rock Inc · MSHA ID 0504074
    Abandoned
  14. BROOKLYN MINE
    Underground metal/non-metal · Golden Arrow Mining Inc · MSHA ID 0504584
    Abandoned
  15. Buffalo Boy Mine
    Underground metal/non-metal · Buffalo Boy Mining Company Inc · MSHA ID 0502610
    Abandoned
  16. Elk Park Mine
    Underground metal/non-metal · Minco Inc · MSHA ID 0503500
    Abandoned
  17. Esmeralda
    Surface metal/non-metal · San Juan Milling Company · MSHA ID 0503113
    Abandoned
  18. Ezra-R Mine
    Underground metal/non-metal · Animas Canyon Mining Company · MSHA ID 0503467
    Abandoned
  19. Freda Claim
    Underground metal/non-metal · Triple L Mining · MSHA ID 0503693
    Abandoned
  20. Hawkeye Mine
    Underground metal/non-metal · Farmer Sickells Mining Co Of Redval · MSHA ID 0502805
    Abandoned
  21. Henrietta Mine
    Underground metal/non-metal · Henrietta Mines Inc · MSHA ID 0501382
    Abandoned
  22. Jack Knife Mine
    Underground metal/non-metal · Williams Inc · MSHA ID 0503067
    Abandoned
  23. Jones Mining & Pet Mill
    Facility metal/non-metal · Jones Mining & Pet Inc · MSHA ID 0503026
    Abandoned
  24. Little Giant
    Underground metal/non-metal · Little Giant Mining Company · MSHA ID 0502611
    Abandoned
  25. Little Ida Mine
    Underground metal/non-metal · Frank Montonati Mining Company · MSHA ID 0503212
    Abandoned
  26. Minnehaha
    Underground metal/non-metal · Durango Gold Company Inc · MSHA ID 0503685
    Abandoned
  27. Old Hundred Mine
    Underground metal/non-metal · Asamera Minerals (Us) Inc · MSHA ID 0503736
    Abandoned
  28. Osceola-Pride Mine
    Underground metal/non-metal · P & G Mining Inc · MSHA ID 0503428
    Abandoned
  29. Portable Wash Plant No. 1
    Surface metal/non-metal · Mountain Stone Inc. · MSHA ID 0504823
    Abandoned
  30. Ruby Mine
    Underground metal/non-metal · Choctaw Mining Company · MSHA ID 0503176
    Abandoned
  31. San Diego Tunnel
    Underground metal/non-metal · Noranda Exploration Inc · MSHA ID 0503189
    Abandoned
  32. Sultan Mountain Mill
    Facility metal/non-metal · Sultan Mountain Mine · MSHA ID 0503726
    Abandoned
  33. Treasure Mountain Projuct
    Underground metal/non-metal · Noranda Exploration Inc · MSHA ID 0503680
    Abandoned
  34. Valley Forge Mine
    Underground metal/non-metal · Z M K Mining Company · MSHA ID 0503174
    Abandoned
  35. Yukon Mill
    Facility metal/non-metal · Arrigo Milling & Mining · MSHA ID 0502142
    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 ColoradoAll 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.