Contract and Project Controls , BHP Billiton, Olympic Dam Expansion for BHP Billiton START Date Thu, 05/01/2008 - 02:00 END Date Sat, 08/01/2009 - 02:00 Read more about Contract and Project Controls , BHP Billiton, Olympic Dam Expansion for BHP Billiton Contract and Commercial Management on the Prefeasibility Study and Site Preparation Phases/Works for the 17Bill Olympic Dam Expansion Project.