Prime Minister Kevin Rudd has been urged to fulfil an election promise to repeal legislation paving the way for a nuclear waste dump in the Northern Territory. The region was chosen by the Howard government for Australia's first waste facility because of its geological stability and remote terrain, far from population centres. Four sites were being considered, including Muckaty Station, about 120km north of Tennant Creek, and commonwealth defence land at Harts Range, Mount Everard and Fishers Ridge.