John Lithgow. John Lithgow was 40 in The Manhattan Project as 'John Mathewson'.Christopher Collet. Christopher Collet was 18 in The Manhattan Project as 'Paul Stephens'.Cynthia Nixon. Cynthia Nixon was 20 in The Manhattan Project as 'Jenny Anderman'.Jill Eikenberry. Jill Eikenberry was 39 in The Manhattan Project as 'Elizabeth Stephens'.John Mahoney. John Mahoney was 45 in The Manhattan Project as 'Lt. Col. Conroy'.Richard Jenkins. Richard Jenkins was 39 in The Manhattan Project as 'Radiation Controls Officer'.Robert Sean Leonard. Robert Sean Leonard was 17 in The Manhattan Project as 'Max'.Steve Blum. Steve Blum was 26 in The Manhattan Project as 'Laser Efficiency Kid (as Richard Cardona)'.Sarah Burke. Sarah Burke was >> in The Manhattan Project as 'Jenny's Parent'.Robert Schenkkan. Robert Schenkkan was 33 in The Manhattan Project as 'Government Aide'.Richard Council. Richard Council was >> in The Manhattan Project as 'Government Aide'.Ned Eisenberg. Ned Eisenberg was 29 in The Manhattan Project as 'C-4 Guy (uncredited)'.Marshall Brickman. Marshall Brickman was 46 in The Manhattan Project as 'Director, Producer, Writer'Billy Williams. Billy Williams was 57 in The Manhattan Project as 'Director of Photography'Bran Ferren. Bran Ferren was >> in The Manhattan Project as 'Visual Effects Director'Jennifer Ogden. Jennifer Ogden was >> in The Manhattan Project as 'Producer'Roger Paradiso. Roger Paradiso was >> in The Manhattan Project as 'Associate Producer'Philippe Sarde. Philippe Sarde was 37 in The Manhattan Project as 'Original Music Composer'Shay Cunliffe. Shay Cunliffe was >> in The Manhattan Project as 'Costume Design'Philip Rosenberg. Philip Rosenberg was 51 in The Manhattan Project as 'Production Design'Robert Guerra. Robert Guerra was >> in The Manhattan Project as 'Art Direction'Hank Muller. Hank Muller was >> in The Manhattan Project as 'Assistant Camera'Nina Ramsey. Nina Ramsey was >> in The Manhattan Project as 'Set Decoration'