The group's principal activities are the exploration, development, production, transportation and marketing of crude oil, condensate/naptha, liquefied petroleum gas, gas and ethane. it operates in australia, indonesia, papua new guinea, and the united states of america through the following business units: central australia; Northern australia; Western australia; Southern australia; Southern east asia; And usa. in july 2001 the group acquired natural gas australia ltd. gas and ethane accounted for 42% of 2001 revenues; Crude oil, 39%; Condensate/naptha, 11% and liquefied petroleum gas, 8%.