|Trish Craig (2)|
Trish Craig works in the Environmental Health & Safety department at the University of Illinois at Urbana-Champaign. She scanned some of our samples for radioactivity, and donated several too.
Click any element below to see all the samples of that element, or click on the sample picture to go directly to the description of that sample.
Text and images Copyright (c) 2010 by Theodore W. Gray.