A study published in the "British Journal of Psychiatry" (BJP) in 2003 found that half the survivors of the disaster had experienced post-traumatic stress disorder (PTSD) at some time in their lives, that they were more than three times more likely to have developed lifetime PTSD than a comparison group of individuals who had experienced other life-threatening traumas, and that 34 per cent of survivors who took part in the study reported that they still experienced bad dreams or difficulty sleeping because of intrusive thoughts about the disaster. In 2005 Imperial Tobacco settled out of court to end an unfair dismissal suit brought against the company by an Aberfan survivor, who had been employed by the company's Rizla cigarette paper factory near Pontypridd. She had been sacked after she refused to continue working night shifts, stating that it had brought on flashbacks from 1966, when she had been buried waist-deep in the landslide while walking to school. She survived, but a friend who had been walking with her was killed.