While pursuing his doctorate in polymer science and engineering at the University of Massachusetts – Amherst in 1983, Joon Choo went on a series of job interviews, one of which was at Shamrock Technologies. Mr. Choo met with Bill Neuberg, Shamrock Technologies’ owner, and ended up joining the company as a developmental chemist. “In that interview, Bill asked me to describe for him the crystal structure of polyethylene, and when we were done, he hired me,” Mr. Choo said. “I liked his style of ...