Links:
Montana State Historic Preservation Office - Montana Historical Society
Montana State University
University of Montana
Yellowstone County Peter Yegen Museum
MSU-Billings Center for the Northern Plains
Custer National Forest
Bureau of Land Management
www.geochemicalresearch.comRichard E. Hughes, Ph.D., RPA
Director, Geochemical Research Laboratory 20 Portola Green Circle Portola Valley, CA 94028-7833
Phone: (650) 851-1410
Specialization is materials characterization, principally volcanic glass (obsidian) "sourcing".