James Bridges (February 3, 1936June 6, 1993) was an American screenwriter, film director, producer and actor.
David Bilcock (6 December 1937 – 4 July 2009) was an Australian producer and editor who was an important player in the re-emergence of the Australian film industry in the late 60s and early 70s.
 He was a close collaborator with Robin Copping and Tim Burstall and helped set up Hexagon Productions.
Robin Copping (born 1934) is an Australian cinematographer and producer.
 He was part of the revival of the Australian film industry in the 1960s and '70, forming notable partnerships with David Bilcock and Tim Burstall and helping form Hexagon Productions.
James Bridges was an American screenwriter and film director.
The China Syndrome is a 1979 American thriller film directed by James Bridges and written by Bridges, Mike Gray, and T. S. Cook.
 It tells the story of a television reporter and her cameraman who discover safety coverups at a nuclear power plant.
 It stars Jane Fonda, Jack Lemmon, and Michael Douglas, with Douglas also serving as the film's producer.
 The cast also features Scott Brady, James Hampton, Peter Donat, Richard Herd, and Wilford Brimley.
White Hunter Black Heart is a 1990 American adventure drama film directed by and starring Clint Eastwood and based on the 1953 book of the same name by Peter Viertel.
 Viertel also co-wrote the script with James Bridges and Burt Kennedy.
 The film is a thinly disguised account of writer Peter Viertel's experiences while working on the classic 1951 film "The African Queen", which was shot on location in Africa at a time when location shoots outside of the United States for American films were very rare.
 The main character, brash director John Wilson, played by Eastwood, is based on real-life director John Huston.
 Jeff Fahey plays Pete Verrill, a character based on Viertel.
 George Dzundza's character is based on "African Queen" producer Sam Spiegel.
 Marisa Berenson's character Kay Gibson and Richard Vanstone's character Phil Duncan, are based on Katharine Hepburn and Humphrey Bogart, respectively.
Darrell James Roodt (born in Johannesburg, April 28, 1962) is a South African film director, screenwriter and producer.
 He is probably most well known for his 1992 film "Sarafina!
" which starred actress Whoopi Goldberg.
 Also regarded as South Africa's most prolific film director, Roodt has worked with the late Patrick Swayze in "Father Hood", James Earl Jones in "Cry, the Beloved Country" and Ice Cube in "Dangerous Grounds".
Thomas Steven "T. S." Cook (August 25, 1947 – January 5, 2013) was an American screenwriter and producer, perhaps best known for writing "The China Syndrome" (1979), sharing with Mike Gray and James Bridges, which garnered him Academy Award, Emmy Award, and Golden Globe nominations.
Edward Montagne (May 20, 1912 – December 15, 2003) was a television series producer and film director most noted for directing the movies "McHale's Navy" (1964) starring Ernest Borgnine, its sequel "McHale's Navy Joins the Air Force" (1965) starring Joe Flynn and Tim Conway, "The Reluctant Astronaut" (1967) starring Don Knotts and "They Went That-A-Way & That-A-Way" (1978) starring Tim Conway and Chuck McCann.
 He was the son of screenwriter Edward J. Montagne, and was frequently also billed as "Edward J. Montagne."
Timothy "Tim" Burstall AM (20 April 1927 – 19 April 2004) was an English Australian film director, writer and producer, best known for hit Australian movie "Alvin Purple" (1973) and its sequel "Alvin Rides Again".

Question: Are Tim Burstall and James Bridges both screenwriter, film director, producer?
Answer: yes