Erich
U. Petersen Department of Geology & Geophysics
115 S. 1460 East, Room 383
University of Utah
Salt Lake City, Utah 84112-0111
801-581-7238 (O)
801-483-2289 (H)
801-440-1069 (cell) erich.petersen@utah.edu
William X. Chávez, Jr. Mineral & Environmental Engineering Department
New Mexico School of Mines
Socorro, New Mexico, U.S.A. 87801
505-835-5317 (O)
505-266-2989 (H)
505-835-5252 (FAX) wxchavez@nmt.edu
