special effects technician
special effects foreman
special effects: Atlanta
special effects: Alberta (as Jeff Butterworth)
special effects: Atlanta (as Stew DePass)
special effects foreman (as John J. Downey)
special effects assistant (as Matthew Downey)
special effects supervisor (as Scott Fisher)
modelmaker
special effects foreman (as Ronald Goldstein)
special effects technician: Iceland
special effects foreman: Iceland
special effects foreman (as Joseph E. Judd)
special effects technician: Iceland (as David Jonasson)
lead painter
special effects coordinator: Alberta
special effects foreman (as James Rollins)
special effects assistant
special effects technician (as Robert Slater)
pyrotechnician assistant: New Deal Studios (uncredited)
special effects technician (uncredited)
pyrotechnician: New Deal Studios (uncredited)
propshop technician (uncredited)
special effects assistant (uncredited)
pyrotechnician: New Deal Studios (uncredited) / special effects: additional photography (uncredited)
special effects technician: New Deal Studios (uncredited)
special effects (uncredited)
special effects foreman (uncredited)
mold maker (uncredited)