PeBeKa SA (2020)

Saracen Gold Mines (2016)

Thyssen Schachtbau GmbH (2015)

Thyssen Schachtbau GmbH (2015)

Macmahon (2015)

John Holland (2015)

CBH Group (2015)

Parsons Brinckerhoff (2013)

Mudjatik Thyssen Mining (2012)

Parsons Brinckerhoff (2012)

Thyssen Mining (2012)

RUC Cementation Mining Contractors (2012)

Mudjatik Thyssen Mining (2012)

Macmahon (2012)

CBH Group (2012)

Xstrata Nickel Australasia (2010)

Sega Bulkhead (2010)

St. Ives Gold Mine (2008)

Western Power (2007)

BGC (2006)

Western Areas NL (2006)

Voortrekker Monument (2005)

Transfield-Kumagai Joint Venture BHP Port Hedland Harbour Tunnel (1997)

Youanmi Gold Mine (1996)

North Limited (1996)

Simpson Burke (1992)