The following is an e-mail sent by EnergySolutions to me:
I sent a message through Wikipedia, but I am not certain it went through. I am asking your permission to use the image of Radiation Penetration2-pn.png found on Wikipedia. My boss, Dr. Raul Deju is writing a book on Nuclear Energy. Please let me know if we have your permission to use this. If we do have your permission, we would like to give you credit, so please provide us your full name (if you like). If you have futher questions, please respond through this email or feel free to contact me at the number below. Thanks.
http://upload.wikimedia.org/wikipedia/commons/a/ae/RadiationPenetration2-pn.png
Robyn Clayton EnergySolutions 423 W. 300 So. Suite 200 Salt Lake City, UT 84101 (801) 649-2223 office (801) 455-2921 cell