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MSHA mine register by county

Mines in Monroe County, Michigan

Monroe County, Michigan has 17 mines on MSHA's register: 4 active, 2 intermittent, 11 abandoned. 3 miners have died and 756 accidents have been reported at these mines between 1983 and 2026. Inspectors have issued 1,042 citations.

Every mine MSHA has registered in Monroe 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 Monroe County →

Mines on register
17
Active
4
Fatalities on record
3
Citations issued
1,042
0 underground · 15 surface · 2 facilities 0 coal · 17 metal and non-metal 2 intermittent 11 abandoned 756 reported accidents, 1983–2026
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.
Monroe County, Michigan · Population 155,001
0.2%
Mining share of county employment
$75,272
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
Michigan Paving and Materials Company 4 2 1
France Stone Company 1 0 1
Holcim (US) Incorporated 1 0 1
A J Smith 1 0 0
Al Morgan Sand 1 0 0
AMRIZE GREAT LAKES INC. 1 1 0
Dundee Cement Company 1 0 0
France Stone Company 1 0 0
KGL Associates, Inc 1 0 0
London Aggregates 1 0 0
Mines in Monroe County17 on register
  1. Sylvania Minerals
    Surface metal/non-metal · Sylvania Minerals LLC · MSHA ID 2002964
    Active
  2. Amrize Dundee Quarry
    Surface metal/non-metal · AMRIZE GREAT LAKES INC. · MSHA ID 2002383
    Active
  3. Maybee Quarry
    Surface metal/non-metal · Michigan Paving and Materials Company · MSHA ID 2000042
    Active
  4. Denniston Quarry
    Surface metal/non-metal · Michigan Paving and Materials Company · MSHA ID 2002934
    Active
  5. DUNDEE PLANT
    Facility metal/non-metal · Holcim (US) Incorporated · MSHA ID 2000022
    Abandoned
  6. Ottawa Lake Quarry
    Surface metal/non-metal · Michigan Paving and Materials Company · MSHA ID 2000041
    Intermittent
  7. Monroe Stone Quarry
    Surface metal/non-metal · France Stone Company · MSHA ID 2000024
    Abandoned
  8. Rockwood Quarry LLC
    Surface metal/non-metal · Rockwood Quarry LLC · MSHA ID 2002666
    Abandoned
  9. London Aggregates-Milan
    Facility metal/non-metal · London Aggregates · MSHA ID 2002835
    Abandoned
  10. Newport
    Surface metal/non-metal · Michigan Paving and Materials Company · MSHA ID 2002902
    Intermittent
  11. Plant 302 Stansley Mineral Resources
    Surface metal/non-metal · Stansley Mineral Resources Inc · MSHA ID 2003177
    Abandoned
  12. Jeany1
    Surface metal/non-metal · KGL Associates, Inc · MSHA ID 2003458
    Abandoned
  13. A J Sands
    Surface metal/non-metal · A J Smith · MSHA ID 2002566
    Abandoned
  14. Dundee Mine Or Dundee Cement Co (Quarry)
    Surface metal/non-metal · Dundee Cement Company · MSHA ID 2002516
    Abandoned
  15. Ida Stone Quarry
    Surface metal/non-metal · France Stone Company · MSHA ID 2000043
    Abandoned
  16. Link Mine
    Surface metal/non-metal · Norman Link · MSHA ID 2000407
    Abandoned
  17. Wargo Pit
    Surface metal/non-metal · Al Morgan Sand · MSHA ID 2001625
    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 MichiganAll 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.