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The Indonesia-Australia Geological Mapping Project has published the last of a series of geological and gravity maps of Irian Jaya and Kalimantan. The project, conducted by the Australian Geological Survey Organisation and the Indonesian Geological Research and Development Centre (GRDC), has charted about 380 000 square kilometres of rugged terrain in Irian Jaya and central Kalimantan at a scale of 1:250 000 (1 centimetre to 2.5 kilometres). This area is about half the size of New South Wales. The chief objective of the project, which began 16 years ago, was to train GRDC staff in regional mapping. Mineral and oil exploration will benefit from the work. The project received about A$15 million in funding from Australia.