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The COALQUAL CD-ROM:

Analytical data, sample locations, and descriptive information, analytical methods and sampling techniques, database perspective, and bibliographic references for selected U.S. coal samples

By L.J. Bragg, J.K. Oman, S.J. Tewalt, C.J. Oman, N.H. Rega, P.M. Washington, and R.B. Finkelman

U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 97-134

Supersedes Open-File Report 94-205

The USGS Coal Quality database is an interactive, computerized component of the NCRDS. It contains comprehensive analyses of more than 13,000 samples of coal and associated rocks from every major coal-bearing basin and coal bed in the U.S. The data in the coal quality database represent analyses of the coal as it exists in the ground. The data commonly are presented on an as-received whole-coal basis.

The CD-ROM contains the following information, which can be accessed via the hyperlinks below:

Download the contents of the CD-ROM (189 MB)


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