Complex sentence: Port Stanvac Refinery in Lonsdale, South Australia, a southern suburb of Adelaide, was announced in 1958, and began refining crude oil in 1963.
Split into simpler sentences: Port Stanvac Refinery was an oil refinery located in Lonsdale, South Australia, a southern suburb of Adelaide,. Its construction was announced in 1958 and began refining crude oil in 1963.