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MSHA mine register by county

Mines in Hillsborough County, Florida

Hillsborough County, Florida has 22 mines on MSHA's register: 2 active, 20 abandoned. 2 miners have died and 219 accidents have been reported at these mines between 1983 and 2025. Inspectors have issued 397 citations.

Every mine MSHA has registered in Hillsborough 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 Hillsborough County →

Mines on register
22
Active
2
Fatalities on record
2
Citations issued
397
0 underground · 13 surface · 9 facilities 0 coal · 22 metal and non-metal 20 abandoned 219 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.
Hillsborough County, Florida · Population 1,489,634
0.0%
Mining share of county employment
$75,011
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
Imc-Agrico 2 0 1
Quikrete Construction Materials LLC 1 1 1
Aaron Long Excavating 1 0 0
Agrico Chemical Company 1 0 0
Brewster Phosphates 1 0 0
Caloosa Materials LLC 1 1 0
Caloosa Shell Corporation 1 0 0
Cargill Inc 1 0 0
Chapman Contracting Company 1 0 0
Crystal Construction Company 1 0 0
Mines in Hillsborough County22 on register
  1. Tampa Cement Grinding Plant
    Facility metal/non-metal · Quikrete Construction Materials LLC · MSHA ID 0800159
    Active
  2. Caloosa Materials
    Surface metal/non-metal · Caloosa Materials LLC · MSHA ID 0801422
    Active
  3. BIG FOUR
    Surface metal/non-metal · Imc-Agrico · MSHA ID 0800871
    Abandoned
  4. Lonesome Mine & Mill
    Surface metal/non-metal · Brewster Phosphates · MSHA ID 0800832
    Abandoned
  5. PORT SUTTON
    Facility metal/non-metal · Imc-Agrico · MSHA ID 0800551
    Abandoned
  6. LONESOME
    Surface metal/non-metal · Mosaic Phosphates Company · MSHA ID 0801054
    Abandoned
  7. Caloosa Shell Corporation
    Surface metal/non-metal · Caloosa Shell Corporation · MSHA ID 0800872
    Abandoned
  8. Four Corners Mine
    Surface metal/non-metal · W R Grace & Company · MSHA ID 0800962
    Abandoned
  9. TAMPA SALES YARD
    Facility metal/non-metal · Vulcan Construction Materials, LLC · MSHA ID 0801194
    Abandoned
  10. INDEP. AGG. RATTLESNAKE PT. TERM
    Facility metal/non-metal · Independent Aggregates · MSHA ID 0801149
    Abandoned
  11. Aaron Long Shell Pit
    Surface metal/non-metal · Aaron Long Excavating · MSHA ID 0801017
    Abandoned
  12. Big Bend Terminal
    Facility metal/non-metal · Agrico Chemical Company · MSHA ID 0800790
    Abandoned
  13. Cargill Salt Terminal
    Facility metal/non-metal · Cargill Inc · MSHA ID 0800837
    Abandoned
  14. Delta Soils Pit
    Surface metal/non-metal · Delta Soils Inc · MSHA ID 0800882
    Abandoned
  15. Florida Agglite
    Facility metal/non-metal · Florida Agglite Corp · MSHA ID 0800549
    Abandoned
  16. Hillsborough Mines
    Surface metal/non-metal · Crystal Construction Company · MSHA ID 0800824
    Abandoned
  17. Shell Materials Pit
    Surface metal/non-metal · Shell Materials Inc · MSHA ID 0800880
    Abandoned
  18. Sun City Shell
    Surface metal/non-metal · Sun City Shell Inc · MSHA ID 0801130
    Abandoned
  19. Tampa Bay Shell Pit
    Surface metal/non-metal · Chapman Contracting Company · MSHA ID 0801003
    Abandoned
  20. Tampa Groves Mine
    Surface metal/non-metal · Tampa Groves Mining LLC · MSHA ID 0801369
    Abandoned
  21. Tampa Plant
    Facility metal/non-metal · National Gypsum Company · MSHA ID 0800167
    Abandoned
  22. Tampa Salt And Service Center
    Facility metal/non-metal · Diamond Crystal Salt Company · MSHA ID 0800886
    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 FloridaAll 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.