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Welcome to
the Ohio Geological Survey's
Abandoned
Underground Mine Interactive Map
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BACKGROUND
Ohio has a history of
mining underground that dates to 1800 (pre-Statehood). Commodities
mined underground have included coal, clay, limestone, gypsum,
conglomerate, and, in one unusual instance, even sand and gravel. While
underground mining has occurred across the state, the vast majority of
underground mining has occurred in the coal and clay producing regions
of eastern Ohio. The heyday of underground mining activity occurred in
the late 1800's/early 1900's when more than 1,110 underground mines
were in operation and more than 50,000 Ohioans were employed in
underground mining operations.
An unfortunate consequence of more than two-hundred years of mining
underground is mine subsidence-a geologic hazard that can strike with
little or no warning and can result in very costly property damage
(see: Mine Subsidence; GeoFacts No.12);
Subsidence, in the context of underground mining, is the lowering of
the Earth's surface due to collapse of bedrock and unconsolidated
materials (sand, gravel, silt, and clay) into underground mined voids.
Mine subsidence can damage the foundations of homes, buildings and
roads; disrupt underground utilities, and can be a potential risk to
human life.
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When
buildings are constructed above mines, major damage to walls and
foundations can occur if the mine subsides.
See
AML Development Guide for more information:
Click Here
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interactive map site utilizes pop-up windows. Please disable popup blocking
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DISCLAIMER
Abandoned
underground mines are found in 44 counties in Ohio. The Division of
Geological Survey has detailed abandonment maps (scale: 1 inch equals
400 feet) for over 4,000 mines, most of which are coal mines. In addition to
those mines for which detailed maps are available, the Division has
records for over 2,000 mines for which no detailed maps of the mine workings
are available. The Division's extensive database on abandoned
underground mines has been combined into an Abandoned Underground Mine
(AUM) Geographic Information System (GIS). By way of a street-address
database and a series of hyperlinks, this web-based system will allow
you to find and view available AUM data in the vicinity of your address
of interest. We are very interested in hearing your comments and
suggestions concerning this application. Please forward these to: geo.survey@dnr.state.oh.us
The overall AUM GIS system has been made possible by cooperative
funding from the Ohio Department of Transportation. This web
application has been developed in cooperation with the Ohio Mine
Subsidence Insurance Underwriting Association and the ODNR, Division of
Mineral Resources Management.
While the information presented herein is periodically updated as new
information becomes available, the Division of Geological Survey cannot
identify or locate all abandoned mines within Ohio. Neither the Ohio
Department of Natural Resources, nor any division thereof, nor any of
their employees, contractors, or subcontractors, make any warranty,
express or implied, nor assume any legal liability or responsibility
for the accuracy, completeness, or usefulness of this product. Any use
thereof for a purpose other than for which said information or product
was intended shall be solely at the risk of the user.
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