Robert Ziller was employed as a cameraman for two Mining Review stories in Mining Review 1st Year No.8 of April 1948. It is likely that he was employed by DATA [qv] on a freelance basis.
Sources
NoS Number 334746; Mining Review 1st Year Number 8; Date released April 1948: NoS Number 334747; Mining Review 1st Year Number 8; Date released April 1948.