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MSHA mine register by county

Mines in Kent County, Delaware

Kent County, Delaware has 10 mines on MSHA's register: 3 active, 7 abandoned. 30 accidents have been reported at these mines between 1989 and 2024. Inspectors have issued 173 citations.

Every mine MSHA has registered in Kent 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 Kent County →

Mines on register
10
Active
3
Fatalities on record
0
Citations issued
173
0 underground · 10 surface · 0 facilities 0 coal · 10 metal and non-metal 7 abandoned 30 reported accidents, 1989–2024
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.
Kent County, Delaware · Population 185,043
0.0%
Mining share of county employment
$72,872
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
Pennsy Supply Inc 2 2 0
Porters Sand & Gravel 2 1 0
Barber Sand & Gravel 1 0 0
Diamond Materials, LLC 1 0 0
George Nashold Inc 1 0 0
Hoskinson Sand & Gravel 1 0 0
L D Caulk Sand & Gravel 1 0 0
Tilcon Delaware Inc 1 0 0
Mines in Kent County10 on register
  1. Bay Road Plant #7
    Surface metal/non-metal · Pennsy Supply Inc · MSHA ID 0700059
    Active
  2. Tarburton Pit
    Surface metal/non-metal · Pennsy Supply Inc · MSHA ID 0700093
    Active
  3. Porter Sand & Gravel, Inc.
    Surface metal/non-metal · Porter Sand & Gravel, Inc. · MSHA ID 0700110
    Active
  4. Diamond Materials, LLC
    Surface metal/non-metal · Diamond Materials, LLC · MSHA ID 0700094
    Abandoned
  5. PLANT NO. 701
    Surface metal/non-metal · Tilcon Delaware Inc · MSHA ID 0700103
    Abandoned
  6. Barber Sand & Gravel Pit & Mill
    Surface metal/non-metal · Barber Sand & Gravel · MSHA ID 0700051
    Abandoned
  7. Hoskinson Gravel Pit
    Surface metal/non-metal · Hoskinson Sand & Gravel · MSHA ID 0700098
    Abandoned
  8. L D Caulk Pit And Mill
    Surface metal/non-metal · L D Caulk Sand & Gravel · MSHA ID 0700052
    Abandoned
  9. Porter Sand Pit
    Surface metal/non-metal · Porters Sand & Gravel · MSHA ID 0700075
    Abandoned
  10. Sand & Gravel Operation
    Surface metal/non-metal · George Nashold Inc · MSHA ID 0700054
    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 DelawareAll 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.