Perma-Fix Environmental Services, Inc. (NASDAQ:PESI) Q4 2018 Earnings Conference Call April 1, 2019 12:00 PM ET Company Participants David Waldman - Crescendo Communications Mark Duff - President & CEO Dr. Louis Centofanti - EVP of Strategic Initiatives Ben Naccarato - CFO Conference Call Participants Bill Nasgovitz - Heartland Advisors Operator Greetings. Welcome to Perma-Fix Environment's Fourth Quarter and Fiscal 2018 Business Update Conference Call. At this time, all participants are in a listen-only mo ...