In June 1945, during investigations by US Forces into the former gassing facility at Hartheim, American investigating officer Charles Dameron broke open a steel safe in which the so-called Hartheim Statistics were found. This was a 39-page brochure produced for the internal purposes of the Nazi Euthanasia Programme (Aktion T4) containing monthly statistics of the gassing of mentally and physically handicapped patients (described in the document as "disinfection") carried out in the six euthanasia institutes on the territory of the Reich. In 1968 and 1970 an ex-employee of the establishment revealed, as a witness, that he had to compile the material at the end of 1942. The Hartheim Statistics included a page on which it was calculated that in "disinfecting 70,273 people with a life expectat