Long-time special effects maven who began working in the industry at MGM in 1968, working on ICE STATION ZEBRA and THOROUGHLY MODERN MILLIE, among others, before moving to become director of advertising at the Mole-Richardson Company in 1967. In 1969 he moved to the Research Center of the Association of Motion Picture and Television Producers as manager of development engineering, and stayed until the Center closed in 1976. Since that time Clark has operated his own motion picture technology consulting firm. Clark has been a member of the Scientific and Technical Awards Committee since 1974, serving for many years on its Rules and Steering committees and himself received a Scientific and Technical Award for co-developing, with 3M, Nextel simulated blood. In addition, he served as chairman of the Visual Effects Award Executive Committee and is a founding member of the Academy's Visual Effects Branch. His book, Special Effects in Motion Pictures, remains a definitive book on the subject.  Scientific or Technical Awards (Class III) 1972: (of the AMPTP Motion Picture and Television Research Center) For development of the Nextel simulated blood for motion picture color photography. [w. Philip V. Palmquist & Leonard L. Olson (both of 3M Company)]  Honorary & Other Awards 1997: "In appreciation for outstanding service and dedication to upholding the high standards of the Academy of Motion Picture Arts and Sciences." Winner presented John A. Bonner Medal of Commendation. 1 Scientific/Technical Award, 1 Honorary Award