U.S. Department of the Interior

National Mine Map Repository (NMMR) Logo

National Mine Map Repository

"Preserving Mine Maps for Future Generations"

The National Mine Map Repository (NMMR) collects and maintains mine map information and images for the entire country. As an extension of the Office of Surface Mining Reclamation and Enforcement (OSMRE), NMMR acquires maps through public outreach efforts directed at state and federal agencies as well as mining companies, engineering and consulting firms, surveying companies, universities, and private citizens.

Celebrating our new and improved database!

OSMRE and NMMR are happy to announce upgrades to its online mine map database, making searching through its extensive historic and contemporary mine map collection easier than ever.
This is the first major update to the NMMR online database in over a decade. Modernization efforts have resulted in the following features being added to the system:

  1. New public search interface - The existing search has been replaced with an easier to read page that has additional data fields, more flexible search options, more intuitively organized results, and a Help section with a downloadable data dictionary.
  2. New public web map - Mine locations can be viewed in a digital map with numerous searching and filtering options, such as searching within an area drawn on the map or filtering the display to only show mines in a desired seam
  3. Numerous internal enhancements - Changes include migration from a flat-file to a relational database format, new staff interface, compatibility with geographic information systems (GIS), and new quality control, organization and searching tools that enable higher quality map data to become available to the public more quickly and allow staff to efficiently complete sophisticated searches to fulfill map requests

Other improvements include: Weekly updated data, Data improvements for thousands of mines, and New information collected, such as noting maps with stratigraphic columns, mine hazards, or historic surface and mineral owners

March Mapness Tournament

Congratulations to the 2018 March Mapness Tournament Champion Pennsylvania! This 92 year old map (Doc #31668) shows bituminous #coal mines in Allegheny County, PA. To learn more about this map and others, search our database, Mine Map Index.

Image of the Wright Mine, mine map, with the March Mapness Mine Map Champ logo in the corner. Final OSMRE 2018 March Mapness Bracket

Having trouble seeing the image? Download the March Mapness Bracket PDF.

Contact NMMR

The National Mine Map Repository is always looking for additional mine maps. Please contact us if you have mine maps that you would permit the repository to scan and add to the collection. All physical maps are returned to the owner. See our donation page for more information.

The contacts, telephone numbers, and office location for the repository is:

Office of Surface Mining Reclamation and Enforcement
National Mine Map Repository
3 Parkway Center
Pittsburgh, PA 15220
Fax: 412.937.2888

Office Hours: 7:30 a.m. to 4:00 p.m.; Monday - Friday by appointment.

NMMR charges private companies $46/hour for research.

Primary Contact:

Paul Coyle, Geologist and Mine Map Team Leader
Phone: (412) 937-2833

Secondary Contacts:

Brianne Cassidy, Geographer
Phone: (412) 937-2124

Beth Spindler, Program Specialist (Mine Map Repository)
Phone: (412) 937-2845

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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