National Geologic Map Database
General Information
- Title: U.S. Geological Survey coal quality (COALQUAL) database: version 2.0
- Author(s): Bragg, L.J., Oman, J.K., Tewalt, S.J., Oman, C.L., Rega, N.H., Washington, P.M., and Finkelman, R.B.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Open-File Report OF-97-134
- Publication Date: 1997
- Map Scale: 1:5,000,000
- Cross Section: None
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Additional Resources
- Links and Downloads:
- Publication (includes GIS data)
- For more information, please contact:
- U.S. Geological Survey
- USGS Information Services
- Box 25286
- Denver, CO 80225
- Phone: (303) 202-4700 or 1-888-ASK-USGS
- Fax: (303) 202-4710
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.