Nuclear engineer Alan Parkinson observed that "an Aboriginal living a semi-traditional lifestyle would receive an effective dose of 5 mSv/a (five times that allowed for a member of the public). Within the 120 km², the effective dose would be up to 13 times greater." The effectiveness of the cleanup has been disputed on a number of occasions. Effects on people One author suggests that the resettlement of Aboriginal people and denial of access to their traditional lands "contributed significantly to the social disintegration which characterises the community to this day. Petrol sniffing, juvenile crime, alcoholism and chronic friction between residents and the South Australian police have become facts of life." In 1994, the Australian Government reached a compensation settlement with the traditional owners, Maralinga Tjarutja, which resulted in the payment of $13.5 million in settlement of all claims in relation to the nuclear testing. Most of the land was handed back in 2009; full handover was marked with a ceremony on 5 November 2014. A Department of Veterans' Affairs study concluded that "the doses received by Australian participants were small. ... Only 2% of participants received more than the current Australian annual dose limit for occupationally exposed persons (20 mSv)." However, such findings are contested. Australian servicemen were ordered to: repeatedly fly through the mushroom clouds from atomic explosions, without protection; and to march into ground zero immediately after bomb detonation. Airborne drifts of radioactive material resulted in "radioactive rain" being dropped on Brisbane and Queensland country areas. A 1999 study for the British Nuclear Test Veterans Association found that 30 per cent of involved veterans had died, mostly in their fifties, from cancers. In 2001, Sue Rabbit Roff, a researcher from the University of Dundee, uncovered documentary evidence that troops had been ordered to run, walk and crawl across areas contaminated by the Buffalo tests in the days immediately following the detonations; a fact that the British Government later admitted. Roff stated that "it puts the lie to the British Government's claim that they never used humans for guinea pig-type experiments in nuclear weapons trials in Australia." Successive Australian Governments failed to compensate servicemen who contracted cancers following exposure to radiation at Maralinga. However, after a British decision in 1988 to compensate its own servicemen, the Australian Government negotiated compensation for several Australian servicemen suffering from two specific conditions, leukaemia (except lymphatic leukemia) and the rare blood disorder multiple