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MSHA mine register by county

Mines in Mackinac County, Michigan

Mackinac County, Michigan has 24 mines on MSHA's register: 1 active, 4 intermittent, 19 abandoned. 1 miner has died and 236 accidents have been reported at these mines between 1983 and 2026. Inspectors have issued 1,072 citations.

Every mine MSHA has registered in Mackinac 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 Mackinac County →

Mines on register
24
Active
1
Fatalities on record
1
Citations issued
1,072
0 underground · 24 surface · 0 facilities 0 coal · 24 metal and non-metal 4 intermittent 19 abandoned 236 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.
Mackinac County, Michigan · Population 10,865
0.7%
Mining share of county employment
$58,598
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
O-N Minerals (Michigan) Company 2 1 1
ConAgg, Inc. 2 0 0
CSI Sands NE, Ltd. 2 0 0
Graymont (MI), LLC. 2 0 0
A O Company 1 0 0
Aroco Aggregates Inc 1 0 0
Duval Developments USA Limited 1 0 0
Ferrari Construction Materials Inc 1 0 0
Fred W Vertz 1 0 0
HESSEL BLOCK CO. INC. 1 0 0
Mines in Mackinac County24 on register
  1. O-N Minerals, Cedarville Operation
    Surface metal/non-metal · O-N Minerals (Michigan) Company · MSHA ID 2000061
    Active
  2. Pointe North
    Surface metal/non-metal · CSI Sands NE, Ltd. · MSHA ID 2002685
    Intermittent
  3. BILL BURTON PIT
    Surface metal/non-metal · Precision Excavation, Inc. · MSHA ID 2003169
    Intermittent
  4. Portable Screen Plant
    Surface metal/non-metal · Con Agg Inc · MSHA ID 2003514
    Intermittent
  5. Graymont Borgstrom Road Quarry
    Surface metal/non-metal · Graymont (MI), LLC. · MSHA ID 2003525
    Abandoned
  6. Mackinac County Road Comm-East District
    Surface metal/non-metal · Mackinac County Road Commission · MSHA ID 2003385
    Abandoned
  7. Ferrari Construction Materials Inc
    Surface metal/non-metal · Ferrari Construction Materials Inc · MSHA ID 2003399
    Abandoned
  8. Borgstrom Wash Plant
    Surface metal/non-metal · CSI Sands NE LTD. · MSHA ID 2003606
    Abandoned
  9. Cedarapids
    Surface metal/non-metal · Duval Developments USA Limited · MSHA ID 2003295
    Abandoned
  10. AROCO AGG., INC.
    Surface metal/non-metal · Aroco Aggregates Inc · MSHA ID 2002004
    Abandoned
  11. Graymont Eastern Quarry
    Surface metal/non-metal · Graymont (MI), LLC. · MSHA ID 2003571
    Abandoned
  12. 390 Findlay Hydraulic Screen
    Surface metal/non-metal · ConAgg, Inc. · MSHA ID 2003706
    Intermittent
  13. A C Cone Crusher ( Unit #3)
    Surface metal/non-metal · James Peterson Sons Inc · MSHA ID 2002741
    Abandoned
  14. A-O Quarry
    Surface metal/non-metal · A O Company · MSHA ID 2000988
    Abandoned
  15. Carmeuse, Port Inland - Corinne Pit
    Surface metal/non-metal · O-N Minerals (Michigan) Company · MSHA ID 2003638
    Abandoned
  16. Duncan Pit
    Surface metal/non-metal · Mackinaw Gravel Company · MSHA ID 2002487
    Abandoned
  17. East Lake Pit
    Surface metal/non-metal · Fred W Vertz · MSHA ID 2001785
    Abandoned
  18. Gould City Pit
    Surface metal/non-metal · Newberry Ready Mix · MSHA ID 2002007
    Abandoned
  19. Mackinac County Pits
    Surface metal/non-metal · Schworm Inc · MSHA ID 2002549
    Abandoned
  20. Mackinac County Pits
    Surface metal/non-metal · Schinella-Mottes Construction Company · MSHA ID 2002567
    Abandoned
  21. Rudy Sherlund
    Surface metal/non-metal · Rudy Sherlund Inc · MSHA ID 2002452
    Abandoned
  22. Rueben Abram Excavating
    Surface metal/non-metal · Rueben Abram Excavating · MSHA ID 2002006
    Abandoned
  23. SCREEN PLANT
    Surface metal/non-metal · HESSEL BLOCK CO. INC. · MSHA ID 2003242
    Abandoned
  24. Taylor Pit
    Surface metal/non-metal · Taylor Lumber Company · MSHA ID 2001432
    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.