The company explores, develops and sells oil and gas reserves in canada, australia, new zealand, the united kingdom and the united states. the company's major assets are two petroleum production leases covering the mereenie oil and gas field (35% working interest) and one petroleum production lease covering the palm valley gas field (52% working interest). both fields are located in the amadeus basin in the northern territory of australia. the company also has a direct carried interest in the kotaneelee gas field in the yukon territory of canada. gas sales accounted for 63% of fiscal 2002 revenues; Oil sales, 24% and other production related revenues, 13%.