Perma-Fix Environmental Services Inc. (NASDAQ:PESI) Q4 2021 Earnings Conference Call March 31, 2022 11:00 AM ET Company Participants David Waldman - Investor Relations Mark Duff - President and CEO Dr. Lou Centofanti - EVP, Strategic Initiatives Ben Naccarato - Chief Financial Officer Conference Call Participants Howard Brous - Wellington Shields Aaron Warwick - Breakout Investors Ross Taylor - ARS Investment Partners Ryan Hamilton - Morgan Dempsey Capital Management Operator Good morning, ladies and gentle ...