The company at its height was involved in large-scale and high-rise property development and construction in Australia, New Zealand, Fiji and the United States of America.
Mainline Corporation was established in 1961 by Richard ("Dick") Baker and Laurie O'Neil as a small construction company in Sydney building apartment blocks in Double Bay and Potts Point.
[1] Dick Baker was appointed as the Chief Executive Officer (CEO) of Mainline Corporation and by 1965 it had expanded into commercial developments including the AMP Building and Gold Fields House.
In 1967, Langer Avery was appointed as Chief Financial Officer (CFO) of Mainline Corporation Ltd and held the position until 1974.
[6] In August 1971, Mainline Corporation declared a consolidated net profit of $844,203 for FY71 on the back of a revenue of $41.5 million for FY71.
[12][13] Following the collapse of Mainline Corporation in August 1974, the Builders Labourers Federation (BLF) called for nationalisation of the building industry under workers control.
[14] On the 16 April 1975, sixteen of Mainline Corporation's best properties (estimated at $86.8 million value) across Australia were sold by Sydney auctioneer F. R. Strange under the instruction of the receiver Mr J. H. Jamison to raise fund to pay creditors.