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MSHA mine register by county

Mines in Douglas County, Colorado

Douglas County, Colorado has 34 mines on MSHA's register: 1 active, 1 intermittent, 32 abandoned. 40 accidents have been reported at these mines between 1984 and 2015. Inspectors have issued 366 citations.

Every mine MSHA has registered in Douglas 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 Douglas County →

Mines on register
34
Active
1
Fatalities on record
0
Citations issued
366
1 underground · 29 surface · 4 facilities 0 coal · 34 metal and non-metal 1 intermittent 32 abandoned 40 reported accidents, 1984–2015
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.
Douglas County, Colorado · Population 368,283
0.6%
Mining share of county employment
$145,737
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
Colorado Department Of Highways 4 0 0
Robinson Brick Company 3 0 0
Centennial Materials Company 2 0 0
Schmidt Aggregates 2 0 0
Aggregate Industries West Central Region Inc 1 0 0
Ars Sand & Gravel Llc 1 0 0
Asphalt Paving Company 1 0 0
Brinkmann-Woodward Construction Company 1 0 0
Castle Rock Aggregates 1 0 0
Castle Rock Rock LLC 1 1 0
Mines in Douglas County34 on register
  1. Castle Rock Rock LLC
    Surface metal/non-metal · Castle Rock Rock LLC · MSHA ID 0504716
    Active
  2. MENCENBERG QUARRY
    Surface metal/non-metal · Schmidt Aggregates · MSHA ID 0504618
    Intermittent
  3. Walker Pit
    Facility metal/non-metal · Centennial Materials Company · MSHA ID 0501053
    Abandoned
  4. CASTLE ROCK QUARRY
    Surface metal/non-metal · Centennial Materials Company · MSHA ID 0503930
    Abandoned
  5. MC CLAIN PIT
    Surface metal/non-metal · Schmidt Aggregates · MSHA ID 0504619
    Abandoned
  6. Star Sand/Gravel
    Surface metal/non-metal · Star Ready Mix · MSHA ID 0504715
    Abandoned
  7. Blakeland Pit
    Facility metal/non-metal · Western Paving Construction Company · MSHA ID 0503947
    Abandoned
  8. Plum Creek Pit
    Surface metal/non-metal · Mobile Premix Sand & Gravel Company · MSHA ID 0503753
    Abandoned
  9. Gove Canyon Pit
    Surface metal/non-metal · Colorado Silica Sand Inc · MSHA ID 0503704
    Abandoned
  10. Lawrence Pit
    Surface metal/non-metal · Brinkmann-Woodward Construction Company · MSHA ID 0503278
    Abandoned
  11. Tricon Kent Co Portable Crushing Plant
    Surface metal/non-metal · Tricon Kent Company · MSHA ID 0504290
    Abandoned
  12. BRALEY PIT #1
    Surface metal/non-metal · Ars Sand & Gravel Llc · MSHA ID 0503831
    Abandoned
  13. Oaklands Ranch Pit
    Surface metal/non-metal · Oaklands Ranch · MSHA ID 0505078
    Abandoned
  14. LAWRENCE DISTRIBUTION YARD
    Facility metal/non-metal · Aggregate Industries West Central Region Inc · MSHA ID 0504701
    Abandoned
  15. A & M Mine
    Surface metal/non-metal · Castle Rock Aggregates · MSHA ID 0503626
    Abandoned
  16. A & M Rock Quarry & Plant
    Surface metal/non-metal · Herren & Strong Inc · MSHA ID 0503124
    Abandoned
  17. Ditmore Quarry
    Surface metal/non-metal · Franktown Sand & Gravel Inc · MSHA ID 0502032
    Abandoned
  18. Fletcher
    Surface metal/non-metal · Colorado Department Of Highways · MSHA ID 0503329
    Abandoned
  19. Franktown Pit & Plant
    Surface metal/non-metal · Hallett Construction Company · MSHA ID 0503813
    Abandoned
  20. Hines Channel
    Surface metal/non-metal · Proto Construction & Paving Inc · MSHA ID 0504171
    Abandoned
  21. HOGBACK MINE
    Underground metal/non-metal · Robinson Brick Company · MSHA ID 0502333
    Abandoned
  22. J A Cattle Co
    Surface metal/non-metal · Colorado Department Of Highways · MSHA ID 0503410
    Abandoned
  23. Jimeson
    Surface metal/non-metal · Colorado Department Of Highways · MSHA ID 0503330
    Abandoned
  24. Larkspur Pits 1 & 2
    Surface metal/non-metal · Kiewit Western Company · MSHA ID 0503144
    Abandoned
  25. Lowell Pit
    Surface metal/non-metal · Douglas County · MSHA ID 0504543
    Abandoned
  26. Mclair
    Surface metal/non-metal · Colorado Department Of Highways · MSHA ID 0503314
    Abandoned
  27. Pioneer
    Surface metal/non-metal · Robinson Brick Company · MSHA ID 0502220
    Abandoned
  28. Sedalia Plant
    Facility metal/non-metal · Colonna Of Colorado Company · MSHA ID 0501431
    Abandoned
  29. Titan Pit
    Surface metal/non-metal · Titan Sand & Gravel Inc · MSHA ID 0503042
    Abandoned
  30. Titan Pit & Plant
    Surface metal/non-metal · H W Siddle Inc · MSHA ID 0501977
    Abandoned
  31. Tomah
    Surface metal/non-metal · Asphalt Paving Company · MSHA ID 0503959
    Abandoned
  32. Ute
    Surface metal/non-metal · Robinson Brick Company · MSHA ID 0500219
    Abandoned
  33. Whisenhunt Gravel Pit
    Surface metal/non-metal · Colorado Clay & Gravel Inc · MSHA ID 0501901
    Abandoned
  34. Williamson Douglas
    Surface metal/non-metal · Denver Brick Company · MSHA ID 0500225
    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.