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MSHA mine register by county

Mines in Middlesex County, New Jersey

Middlesex County, New Jersey has 14 mines on MSHA's register: 1 active, 13 abandoned. 125 accidents have been reported at these mines between 1983 and 2025. Inspectors have issued 302 citations.

Every mine MSHA has registered in Middlesex 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 Middlesex County →

Mines on register
14
Active
1
Fatalities on record
0
Citations issued
302
0 underground · 11 surface · 3 facilities 0 coal · 14 metal and non-metal 13 abandoned 125 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.
Middlesex County, New Jersey · Population 861,535
0.0%
Mining share of county employment
$109,028
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
Pinnacle Materials Inc 2 0 0
Amboy Aggregates J.V. 1 0 0
Cyprus Mines Corp 1 0 0
Dallenbach Sand Company Inc 1 0 0
E M E Inc/R W Vogel Inc 1 0 0
Glen Rock Concrete Products 1 0 0
Gordon'S Sand & Gravel Company 1 0 0
Herbert Materials Inc 1 0 0
Raritan River Sand Company Inc 1 0 0
Schundler Company 1 0 0
Mines in Middlesex County14 on register
  1. Tilcon NY-Perth Amboy Sand
    Surface metal/non-metal · Tilcon New York Inc. · MSHA ID 2801048
    Active
  2. Amboy Aggregates
    Facility metal/non-metal · Amboy Aggregates J.V. · MSHA ID 2800973
    Abandoned
  3. DALLENBACH SAND PLANT
    Surface metal/non-metal · Dallenbach Sand Company Inc · MSHA ID 2800498
    Abandoned
  4. South River Sand Company
    Surface metal/non-metal · South River Sand Company · MSHA ID 2800552
    Abandoned
  5. Monroe Pit
    Surface metal/non-metal · Stavola Mining and Development Company · MSHA ID 2801009
    Abandoned
  6. East Brunswick
    Surface metal/non-metal · Pinnacle Materials Inc · MSHA ID 2800522
    Abandoned
  7. South Plainfield Mill
    Facility metal/non-metal · Cyprus Mines Corp · MSHA ID 2800959
    Abandoned
  8. HOWELL PIT
    Surface metal/non-metal · Pinnacle Materials Inc · MSHA ID 2801008
    Abandoned
  9. Glen-Rock Pit And Mill
    Surface metal/non-metal · Glen Rock Concrete Products · MSHA ID 2800516
    Abandoned
  10. Gordon Dredge And Plant
    Surface metal/non-metal · Gordon'S Sand & Gravel Company · MSHA ID 2800872
    Abandoned
  11. MONROE TOWNSHIP PIT
    Surface metal/non-metal · Herbert Materials Inc · MSHA ID 2800996
    Abandoned
  12. Raritan River Sand Company Incorporated
    Surface metal/non-metal · Raritan River Sand Company Inc · MSHA ID 2800548
    Abandoned
  13. RECHARGE RESERVOIR
    Surface metal/non-metal · E M E Inc/R W Vogel Inc · MSHA ID 2800993
    Abandoned
  14. The Schundler Company
    Facility metal/non-metal · Schundler Company · MSHA ID 2800965
    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 JerseyAll 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.