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MSHA mine register by county

Mines in Platte County, Wyoming

Platte County, Wyoming has 25 mines on MSHA's register: 1 active, 6 intermittent, 15 abandoned. 1 are coal mines and 24 metal or non-metal. 146 accidents have been reported at these mines between 1983 and 2025. Inspectors have issued 540 citations.

Every mine MSHA has registered in Platte 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 Platte County →

Mines on register
25
Active
1
Fatalities on record
0
Citations issued
540
2 underground · 22 surface · 1 facilities 1 coal · 24 metal and non-metal 6 intermittent 15 abandoned 146 reported accidents, 1983–2025
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.
Platte County, Wyoming · Population 8,606
0.4%
Mining share of county employment
$66,299
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
C F & I Steel Corp 2 0 0
Croell, Inc. 2 0 0
Gilpatrick Construction Company Inc 2 0 0
Imerys Marble Inc 2 0 0
383 Construction LLC 1 0 0
A R Fertig Ready Mix Company 1 0 0
Alexander Construction Company 1 0 0
Becor 1 0 0
Collins Quarry And Construction LLC 1 0 0
Emulsified Asphalt Inc Of Wyoming 1 0 0
Mines in Platte County25 on register
  1. Guernsey Quarry
    Surface metal/non-metal · Martin Marietta Materials Inc · MSHA ID 4800004
    Active
  2. Imerys Marble Incorporated
    Facility metal/non-metal · Imerys Marble Inc · MSHA ID 4800533
    Abandoned
  3. Crusher #3
    Surface metal/non-metal · JTL GROUP,INC. · MSHA ID 4801518
    Intermittent
  4. Imerys Marble Incorporated
    Surface metal/non-metal · Imerys Marble Inc · MSHA ID 4800026
    Abandoned
  5. Crusher 1
    Surface metal/non-metal · Croell, Inc · MSHA ID 3901487
    Temporarily Idled
  6. Wash Plant 3
    Surface metal/non-metal · Croell, Inc. · MSHA ID 4801553
    Intermittent
  7. RAVEN 196
    Surface metal/non-metal · Raven Quarries Llc · MSHA ID 4801523
    Abandoned
  8. Alexander Construction
    Surface metal/non-metal · Alexander Construction Company · MSHA ID 4801568
    Intermittent
  9. Wyoming SiO2 Plant
    Surface metal/non-metal · Wyoming Sand Company LLC · MSHA ID 4801863
    Intermittent
  10. Crusher #2
    Surface metal/non-metal · 383 Construction LLC · MSHA ID 4801870
    Intermittent
  11. Sunrise
    Surface metal/non-metal · New Sunrise, LLC · MSHA ID 4801764
    Temporarily Idled
  12. Dodge Pit
    Surface metal/non-metal · Peak Gravel LLC · MSHA ID 4801903
    Intermittent
  13. Crusher #1
    Surface metal/non-metal · RGB Construction · MSHA ID 4801786
    Abandoned
  14. HARTVILLE (INGELSIDE)
    Surface metal/non-metal · Pete Lien & Sons Inc · MSHA ID 4801586
    Abandoned
  15. A R Fertig Pit
    Surface metal/non-metal · A R Fertig Ready Mix Company · MSHA ID 4801026
    Abandoned
  16. Basin Pit No 1
    Surface metal/non-metal · Gilpatrick Construction Company Inc · MSHA ID 4801266
    Abandoned
  17. Chicago Pit
    Surface metal/non-metal · C F & I Steel Corp · MSHA ID 4800999
    Abandoned
  18. Collins Quarry
    Surface metal/non-metal · Collins Quarry And Construction LLC · MSHA ID 4801918
    Temporarily Idled
  19. Gray Quarry
    Surface metal/non-metal · Emulsified Asphalt Inc Of Wyoming · MSHA ID 4801397
    Abandoned
  20. Lidstrom Pit #1
    Surface metal/non-metal · Lidstrom Inc · MSHA ID 4801143
    Abandoned
  21. May Pit
    Surface metal/non-metal · Gilpatrick Construction Company Inc · MSHA ID 4801238
    Abandoned
  22. Owen'S Pit
    Surface metal/non-metal · Teton Construction Company · MSHA ID 4801155
    Abandoned
  23. Platte County Pit
    Surface metal/non-metal · Platte County Highway Department · MSHA ID 4801108
    Abandoned
  24. Roncco
    Underground coal · Becor · MSHA ID 4800078
    Abandoned and Sealed
  25. Sunrise Mine And Mill
    Underground metal/non-metal · C F & I Steel Corp · MSHA ID 4800144
    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.