Complex sentence: Between 1965 and 1968, O'Neill (as Bridgart) worked in the opal industry which required frequent travel between Melbourne and Coober Pedy in South Australia and then obtained worked on a cattle station in the Kimberley region of Western Australia.
Split into simpler sentences: Between 1965 and 1968, O'Neill (as Bridgart) worked in the opal industry which required frequent travel between Melbourne and Coober Pedy in South Australia. He then obtained work on a cattle station in the Kimberley region of Western Australia.