Abandoned mines

Is this ZIP undermined by old mining?

Mines are ODNR's maps of underground coal and mineral mines abandoned before 1977, the ones that can subside or leak acid water. The map shows the share of a ZIP's total area (land plus inland water) above one, and "partly mapped" means the extent is inferred.

1,229 of 1,233 ZIPs have data; median 0%.

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No mapped underground mine · 970 Under 1% of the area undermined · 102 1 to 5% · 71 5 to 15% · 32 15% or more of the area · 54 No data · 4

Highest and lowest

Highest

Lowest

Source

ODNR Mines of Ohio: abandoned underground coal and industrial-mineral mines mapped before 1977 (5,116 polygons), overlaid on ZCTAs in Albers equal-area: share of each ZCTA's total area (land plus inland water) over a mapped mine; ODNR Division of Geological Survey industrial minerals locations, 2015 (active quarries, sand and gravel pits, clay and salt operations, and surface and underground coal mines)

ODNR mines of Ohio · ODNR Geological Survey

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