U.S. Department of the Interior

National Mine Map Repository (NMMR) Logo

National Mine Map Repository

"Preserving Mine Maps for Future Generations"

Available Information from the National Mine Map Repository

The NMMR contains digital and microfilm maps of surface and underground coal, metal, and non-metal mines throughout the United States. Some of the information that can be found in the repository includes:

  • Mine and company names
  • Underground mine plans including mains, rooms, and pillars
  • Closure maps
  • Adjacent mines
  • Man-ways, shafts, mine surface openings, barrier pillars, and ventilation facilities
  • Geological information including bed name, bed thickness, depth, drill-hole data, cross-sections, elevation contours, structures, and outcrops
  • Geographical data including abandoned railroad lines and stations, coal towns, surface facilities, roads, ponds, streams, and property survey points
  • Districts, townships, sections, ranges, counties and municipalities, latitudes and longitudes, elevation bench marks, gas and oil wells, and drill-hole locations

The NMMR provides customers with scanned map images (ranging from 200 dpi to 600 dpi). Newly donated mine maps are scanned in color. The following is an example of some of the NMMR’s clients and the types of requests received:

Private Citizens/Homeowners: Inquire about past mining activity underlying their residence/community to assess potential property hazard information related to past coal mining. They may also request information pertaining to mine subsidence insurance. There is no charge to private citizens and homeowners for the services of the NMMR.

Consultants: Identify specific project areas and request information on various mine seams, mine depth, extent of mine, closure dates, detailed maps of mine workings, and mine operators, to use as a basic source of geological and engineering data.

Government Agencies: Request information on subsidence, acid mine drainage, highway and bridge construction, mine maps for public historical display at municipal buildings or local town meetings, and mine fires and rescue operations. The information may also be requested to conduct health and safety activities, such as to correct adverse environmental impacts resulting from landslides, subsidence, etc. There is no charge to government agencies for the services of the NMMR.

Developers & Contractors: Request mine maps to determine extent of mine workings and depth for pre-construction. They require information on coverage over mines to determine a need for support structures or to assist in making decisions relative to land use, foundation design, etc.

Architects: Utilize mine map information in their design of structures. The information is necessary for decisions on the types of foundations and weight displacements.

Realtors: Request information on abandoned mines within a given municipality. Their primary concern is to identify the extent of mines that underlie individual homes and whether information on mine subsidence insurance is necessary.

Mining Companies: Utilize mine maps to prepare mine permit applications for new or existing mines. Consume considerable time researching map files and request mine map copies for further evaluations.

The NMMR fees-for-services:
(Fees do not apply to not-for-profit interests.)

  • Research Assistance: $46.00/hour @ 15 minute increments
  • There is no charge map transfers.

Office of Surface Mining Reclamation and Enforcement Disclaimer: Mine maps within the Office of Surface Mining Reclamation and Enforcement (OSMRE), National Mine Map Repository (NMMR) are not guaranteed to be accurate, correct, or complete.

All maps in the NMMR have been donated to the OSMRE.  The information contained therein cannot be verified and so cannot be guaranteed.

OSMRE’s inability to guarantee includes, but is not limited to, the following:

  • The accuracy of the mine maps within the NMMR.
  • The reliability of findings based upon data from the maps.
  • The reliability of findings from digital mapping programs.
  • The completeness of the maps, as they may not reflect prior or more recent mining.
  • The accuracy of any georeferenced mine maps found in the NMMR.


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