This email is to announce that Hoon Choi will be defending his thesis: Development of separation and purification methods for producing rare earth elements from coal fly ash Monday, August 13, 2018 at 2:00 PM in FRNY 3062A. The dissertation is directed by Dr. Wang. The abstract is attached, and all are welcome to attend. Bev Johnson Graduate Program Administrator Chemical Engineering Forney Hall 2037D Purdue University 765-494-4057 [P bling]