Detecting Illicit Nuclear Materials Smuggling Citation: G.M. Gaukler, “Detecting Illicit Nuclear Materials Smuggling”, IIE Annual Conference, Cancun, Mexico, June 7, 2010. Associated Project: 1. SHIELD (Smuggled HEU Interdiction through Enhanced anaLysis and Detection): A Framework for Developing Novel Detection Systems Focused on Interdicting Shielded HEU