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The 1990s is a period of consolidation for the Company as it concentrates on winning and delivering larger, more complex construction projects across its operating regions. The primary focus remains on pipelines, marine and tunnelling.

American construction company Morrison Knudsen buys a controlling stake in the Company in 1992​, divesting later in the decade and being replaced by South African construction company LTA. ​

Founder Malcolm McConnell passes away in 1995.


1992: The awarding of the Kutubu oil pipeline contract in Papua New Guinea consolidates the Company's reputation as an international expert in remote location projects.

1995: An Institute of Engineers Australia Award for excellence is presented for work on the Blue Mountains Sewerage Transfer Scheme, in which three world records were set for tunnelling.

1999: Company purchases Stockton – directional drilling company, long established in the UK, Europe and North