Between 1997 and 2002, five security guards at the National Gallery of Australia were diagnosed with cancer. Nine others were also diagnosed over an unspecified period. “As management learned of the cancers, an investigation was already under way into the health and safety of the building, prompted by long-running allegations by staff and former staff that it was damaging their health and the priceless collection.” An investigation showed staff has been exporsed to “a potentially deadly chemical.”