The Bureau of Economic Geology The University of Texas at Austin Jackson School of Geosciences
Tom  Ewing
Tom Ewing Geologist Bureau of Economic Geology
The University of Texas at Austin
University Station, Box X
Austin, Texas 78713-8924
E-mail: thomas.ewing@beg.utexas.edu Telephone: 210-493-1626 Fax: 512-471-0140
©2014 Bureau of Economic Geology, The University of Texas at Austin