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MSHA mine register by county

Mines in Union County, New Mexico

Union County, New Mexico has 21 mines on MSHA's register: 4 active, 1 intermittent, 16 abandoned. 34 accidents have been reported at these mines between 1984 and 2025. Inspectors have issued 883 citations.

Every mine MSHA has registered in Union 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 Union County →

Mines on register
21
Active
4
Fatalities on record
0
Citations issued
883
0 underground · 20 surface · 1 facilities 0 coal · 21 metal and non-metal 1 intermittent 16 abandoned 34 reported accidents, 1984–2025
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.
Union County, New Mexico · Population 4,039
0.0%
Mining share of county employment
$45,319
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
Rinker Materials Western Inc. 2 0 0
Versatile Construction Company 2 0 0
Volcanic Stone Co 2 1 0
Behne Construction Company Inc 1 0 0
Carrizo Sand & Gravel, LLC 1 0 0
Colorado Lava Inc 1 0 0
Dumas Ventures, LLC 1 0 0
H & H Brosious LLC 1 0 0
J R Hale Contracting Company Inc 1 0 0
J R Trucking 1 0 0
Mines in Union County21 on register
  1. Cinder Mountain Mine
    Surface metal/non-metal · Volcanic Stone Co · MSHA ID 2902191
    Active
  2. TO Mine Plant
    Facility metal/non-metal · Red Hill Lava Products, Inc. · MSHA ID 2902359
    Active
  3. TMR Pit
    Surface metal/non-metal · Magnum Aggregates · MSHA ID 2902337
    Active
  4. Southwest Crushing Portable Jaw Crusher
    Surface metal/non-metal · Southwest Crushing & Aggregate, LLC · MSHA ID 0505055
    Active
  5. Rinker Materials Des Moines Quarry
    Surface metal/non-metal · Rinker Materials Western Inc. · MSHA ID 2900194
    Abandoned
  6. Crusher #1
    Surface metal/non-metal · J R Hale Contracting Company Inc · MSHA ID 2901679
    Abandoned
  7. Versa-Tech Crusher
    Surface metal/non-metal · Versa-Tech Industries Inc · MSHA ID 2902198
    Abandoned
  8. Versatile Crusher
    Surface metal/non-metal · Versatile Construction Company · MSHA ID 2902210
    Abandoned
  9. Rinker Materials Malpie Quarry
    Surface metal/non-metal · Rinker Materials Western Inc. · MSHA ID 2902205
    Abandoned
  10. Crusher # 8
    Surface metal/non-metal · Southway Construction Co Inc of Alamosa · MSHA ID 0504781
    Abandoned
  11. Versatile Crusher #2
    Surface metal/non-metal · Versatile Construction Company · MSHA ID 2902499
    Intermittent
  12. BEHNE CONST CO INC
    Surface metal/non-metal · Behne Construction Company Inc · MSHA ID 2902196
    Abandoned
  13. Portable Crusher #1
    Surface metal/non-metal · Volcanic Stone Co. · MSHA ID 4104962
    Abandoned
  14. CARRIZO PIT
    Surface metal/non-metal · Carrizo Sand & Gravel, LLC · MSHA ID 2902218
    Abandoned
  15. Portable #2
    Surface metal/non-metal · H & H Brosious LLC · MSHA ID 2902362
    Abandoned
  16. Portable Crusher #2
    Surface metal/non-metal · Kiewit Western Company · MSHA ID 2901614
    Abandoned
  17. Long Ranch Mine
    Surface metal/non-metal · Dumas Ventures, LLC · MSHA ID 2902419
    Abandoned
  18. J R PIT
    Surface metal/non-metal · J R Trucking · MSHA ID 2902104
    Abandoned
  19. Malpie Plant
    Surface metal/non-metal · Colorado Lava Inc · MSHA ID 2902360
    Abandoned
  20. R. Burrell Day Pit
    Surface metal/non-metal · Twin Mountain Const. Co. · MSHA ID 2902327
    Abandoned
  21. Seneca Pit
    Surface metal/non-metal · Six-M Concrete Company · MSHA ID 2900616
    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 New MexicoAll 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.