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MSHA mine register by county

Mines in Iosco County, Michigan

Iosco County, Michigan has 7 mines on MSHA's register: 2 active, 4 intermittent, 1 abandoned. 137 accidents have been reported at these mines between 1983 and 2025. Inspectors have issued 307 citations.

Every mine MSHA has registered in Iosco 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 Iosco County →

Mines on register
7
Active
2
Fatalities on record
0
Citations issued
307
0 underground · 7 surface · 0 facilities 0 coal · 7 metal and non-metal 4 intermittent 1 abandoned 137 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.
Iosco County, Michigan · Population 25,333
0.5%
Mining share of county employment
$47,777
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
R E Glancy Inc 3 0 0
Gold Bond Building Products, LLC 1 1 0
Keystone Minerals LLC 1 0 0
Michigan Gypsum Company 1 0 0
United States Gypsum Company 1 1 0
Mines in Iosco County7 on register
  1. ALABASTER PLANT
    Surface metal/non-metal · United States Gypsum Company · MSHA ID 2000372
    Active
  2. TAWAS QUARRY
    Surface metal/non-metal · Gold Bond Building Products, LLC · MSHA ID 2000375
    Active
  3. Michigan Gypsum Pit & Mill
    Surface metal/non-metal · Michigan Gypsum Company · MSHA ID 2000379
    Abandoned
  4. Duo-King Plant #4
    Surface metal/non-metal · R E Glancy Inc · MSHA ID 2002404
    Intermittent
  5. Duo-King Plant #1
    Surface metal/non-metal · R E Glancy Inc · MSHA ID 2002401
    Intermittent
  6. Apache Plant #2
    Surface metal/non-metal · R E Glancy Inc · MSHA ID 2002402
    Intermittent
  7. Keystone Minerals
    Surface metal/non-metal · Keystone Minerals LLC · MSHA ID 2003664
    Intermittent

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.