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

Mines in Adams County, Colorado

Adams County, Colorado has 60 mines on MSHA's register: 2 active, 58 abandoned. 2 miners have died and 283 accidents have been reported at these mines between 1983 and 2024. Inspectors have issued 1,077 citations.

Every mine MSHA has registered in Adams 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 Adams County →

Mines on register
60
Active
2
Fatalities on record
2
Citations issued
1,077
0 underground · 59 surface · 1 facilities 0 coal · 60 metal and non-metal 58 abandoned 283 reported accidents, 1983–2024
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.
Adams County, Colorado · Population 524,408
0.9%
Mining share of county employment
$91,387
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
Aggregate Industries WCR Inc 3 0 0
Albert Frei & Sons Inc 3 0 0
Brannan Sand & Gravel Company 3 0 0
Lafarge West Incorporated 3 0 0
Siegrist Construction Company 2 0 1
Adams County-Public Works 2 0 0
Martin Marietta Materials Inc 2 1 0
Ready Mixed Concrete Company 2 0 0
Southway Construction Co. Inc. 1 0 1
Adams County Highway Department/Public Works 1 0 0
Mines in Adams County60 on register
  1. Hatchery
    Surface metal/non-metal · Martin Marietta Materials · MSHA ID 0500954
    Active
  2. Portable Crusher 2
    Surface metal/non-metal · Mid-States Materials LLC · MSHA ID 1401711
    Active
  3. Portable Crushing Plant #5
    Surface metal/non-metal · Southway Construction Co. Inc. · MSHA ID 0504110
    Abandoned
  4. Clear Creek
    Surface metal/non-metal · Siegrist Construction Company · MSHA ID 0504203
    Abandoned
  5. Bromley Lakes
    Surface metal/non-metal · Ready Mixed Concrete Company · MSHA ID 0504312
    Abandoned
  6. THORNTON PLANT
    Surface metal/non-metal · Aggregate Industries WCR Inc · MSHA ID 0503301
    Abandoned
  7. Brighton Plant
    Surface metal/non-metal · Aggregate Industries WCR Inc · MSHA ID 0504258
    Abandoned
  8. Hazeltine/Road Runners Rest II
    Surface metal/non-metal · Cruise & Associates LLC · MSHA ID 0503658
    Abandoned
  9. Howe Pit
    Surface metal/non-metal · Lafarge West Incorporated · MSHA ID 0504099
    Abandoned
  10. Albert Frei & Sons Pit #4
    Surface metal/non-metal · Albert Frei & Sons Inc · MSHA ID 0503659
    Abandoned
  11. Mann Lake Pit
    Surface metal/non-metal · Lafarge West Incorporated · MSHA ID 0503453
    Abandoned
  12. Zigan Sand And Gravel Pit 2
    Surface metal/non-metal · Zigan Sand & Gravel Inc · MSHA ID 0503553
    Abandoned
  13. Albert Frei & Sons Pit #8
    Surface metal/non-metal · Albert Frei & Sons Inc · MSHA ID 0504483
    Abandoned
  14. Colorado Sand & Gravel Company
    Surface metal/non-metal · Colorado Sand & Gravel Company · MSHA ID 0503789
    Abandoned
  15. Northern Portable Plant #18
    Surface metal/non-metal · Lafarge West Incorporated · MSHA ID 0501057
    Abandoned
  16. PIT 1
    Surface metal/non-metal · Albert Frei & Sons Inc · MSHA ID 0504396
    Abandoned
  17. TUCSON RESOURCES
    Surface metal/non-metal · Hall-Irwin Construction Company · MSHA ID 0504533
    Abandoned
  18. Tucson Plant
    Surface metal/non-metal · Aggregate Industries WCR Inc · MSHA ID 0504665
    Abandoned
  19. Adams Plant
    Surface metal/non-metal · Mobile Premix Sand & Gravel Company · MSHA ID 0501029
    Abandoned
  20. BRIGHTON PLANT
    Surface metal/non-metal · Camas Colorado Inc · MSHA ID 0504471
    Abandoned
  21. JONES FINE SAND
    Surface metal/non-metal · Carl Palizzi Inc · MSHA ID 0500997
    Abandoned
  22. GEOCAST
    Surface metal/non-metal · Energy Technologies Group Inc · MSHA ID 0504662
    Abandoned
  23. Henderson Pit
    Surface metal/non-metal · Aggregate Ventures LLC · MSHA ID 0504787
    Abandoned
  24. Schmitt Reddimix
    Surface metal/non-metal · Schmitt Reddimix · MSHA ID 0504233
    Abandoned
  25. Ready Mixed Concrete Co Pit No 1
    Surface metal/non-metal · Ready Mixed Concrete Company · MSHA ID 0500925
    Abandoned
  26. Dahlia Plant
    Surface metal/non-metal · Cooley Gravel Company · MSHA ID 0504487
    Abandoned
  27. PORTABLE CRUSHER #2
    Surface metal/non-metal · Dillon Construction · MSHA ID 0503835
    Abandoned
  28. Brighton Plant
    Surface metal/non-metal · Front Range Aggregates LLC · MSHA ID 0504810
    Abandoned
  29. Bennett Alluvial
    Surface metal/non-metal · Martin Marietta Materials Inc · MSHA ID 0500929
    Abandoned
  30. Hazeltine/Road Runners Rest II
    Surface metal/non-metal · Black Sand Reclamation, LLC · MSHA ID 0505006
    Abandoned
  31. Pacific Pit
    Surface metal/non-metal · Siegrist Construction Company · MSHA ID 0503785
    Abandoned
  32. Rio Grande S/3
    Surface metal/non-metal · Rio Grande Company-Sand & Gravel Div · MSHA ID 0501043
    Abandoned
  33. AMES PORTABLE UNIT # 4
    Surface metal/non-metal · Ames Construction Inc · MSHA ID 0504561
    Abandoned
  34. Kramer South Site
    Surface metal/non-metal · Fiore & Sons, Inc · MSHA ID 0505011
    Abandoned
  35. Portable Wash Plant
    Surface metal/non-metal · Cat Construction, Inc. · MSHA ID 0504747
    Abandoned
  36. DEBETZ PIT
    Surface metal/non-metal · Adams County-Public Works · MSHA ID 0504215
    Abandoned
  37. Adams Transit Mix
    Surface metal/non-metal · Adams Transit Mix Corp · MSHA ID 0500927
    Abandoned
  38. Big R Henderson Pit
    Surface metal/non-metal · Big R Construction Company Inc · MSHA ID 0504381
    Abandoned
  39. Brannan Pit #10
    Surface metal/non-metal · Brannan Sand & Gravel Company · MSHA ID 0502361
    Abandoned
  40. Brannon Pit #5
    Surface metal/non-metal · Brannan Sand & Gravel Company · MSHA ID 0500939
    Abandoned
  41. Brighton Quarry
    Surface metal/non-metal · Brighton Sand & Gravel · MSHA ID 0504390
    Abandoned
  42. Commerce City Pit
    Surface metal/non-metal · Colowyo Improvement Company · MSHA ID 0503293
    Abandoned
  43. Consolidated Rock Pit&Plant
    Surface metal/non-metal · Consolidated Rock Company · MSHA ID 0502639
    Abandoned
  44. County Pit
    Surface metal/non-metal · Adams County-Public Works · MSHA ID 0503292
    Abandoned
  45. Debetz Pit
    Surface metal/non-metal · Adams County Highway Department/Public Works · MSHA ID 0503045
    Abandoned
  46. Federal Mill
    Facility metal/non-metal · Paul E. Danio · MSHA ID 0504994
    Abandoned
  47. GOLD CAMP 3
    Surface metal/non-metal · Pink Misty Minerals and Gems LLC · MSHA ID 0505190
    Abandoned
  48. Goose Haven Adams County Pit
    Surface metal/non-metal · Goose Haven Sand & Gravel Inc · MSHA ID 0504108
    Abandoned
  49. Kilker-Eppinger Pit
    Surface metal/non-metal · Colorado Department Of Highways · MSHA ID 0503449
    Abandoned
  50. Pinewood Or Pinewood Pit
    Surface metal/non-metal · Colorado Sand & Gravel Company · MSHA ID 0503682
    Abandoned
  51. Pit No 20
    Surface metal/non-metal · Brannan Sand & Gravel Company · MSHA ID 0503536
    Abandoned
  52. Platte Valley Sand & Gravel
    Surface metal/non-metal · Platte Valley Sand & Gravel Co · MSHA ID 0502646
    Abandoned
  53. Portable Placer #1
    Surface metal/non-metal · Flag Inc · MSHA ID 0504401
    Abandoned
  54. Riverdale Sand & Gravel Incorporated
    Surface metal/non-metal · Riverdale Sand & Gravel Inc · MSHA ID 0504078
    Abandoned
  55. Sand Creek Farm
    Surface metal/non-metal · Kelley Trucking Inc. · MSHA ID 0505202
    Abandoned
  56. Sand Creek Mine
    Surface metal/non-metal · Carl Palizzi Inc · MSHA ID 0505072
    Abandoned
  57. Speer Development Pit
    Surface metal/non-metal · J Thoms Construction Company Inc · MSHA ID 0502677
    Abandoned
  58. Strong Pit
    Surface metal/non-metal · Strong Bros Excavating Inc · MSHA ID 0503094
    Abandoned
  59. T P T Land Co
    Surface metal/non-metal · T P T Land Company · MSHA ID 0503416
    Abandoned
  60. Worthing Pit
    Surface metal/non-metal · Kilgroe-Atchison Construction & Paving · MSHA ID 0501999
    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.