After various positions in journalism , in 1980 Pratchett became Press Officer for the Central Electricity Generating Board ( CEGB ) in an area that covered four nuclear power stations . He later joked that he had demonstrated " impeccable timing " by making this career change so soon after the Three Mile Island nuclear accident in Pennsylvania , US , and said he would " write a book about my experiences , if I thought anyone would believe it "
Three Mile Island
Three Mile Island accident
Terry Pratchett