Perth-based explorer Kula Gold says it could save $US25 million, or 27 per cent, in the costs of building its Woodlark Island gold project in Papua New Guinea if done so in the current economic environment. Kula’s joint venture partner Geopacific Resources, which is earning up to an 80 per cent stake in Woodlark by spending up to $18.6 million on exploration work, initiated the cost-saving study on the project, appointing Mincore Engineers to undertake the review.