The facility was housed in Hartheim Castle in the municipality of Alkoven, near Linz, Austria, which now is a memorial site and documentation centre.
This was a 39-page brochure produced for the internal purposes of the Nazi "euthanasia" programme (Aktion T4), and contained monthly statistics of the gassing of mentally and physically handicapped patients (called "disinfection" in the document) carried out in the six killing centres on the territory of the Reich.
[2][3]: 478, note 23 The Hartheim statistics included a page on which it was calculated that "disinfecting 70,273 people with a life expectation of 10 years" had saved food in the value of 141,775,573.80 Reichsmarks.
[3]: 24 According to the Hartheim statistics, a total of 18,269 people were murdered in the gas chamber at Hartheim in the period of 16 months between May 1940 and 1 September 1941:[4] These statistics only cover the first extermination phase of the Nazi's euthanasia programme, Action T4, which was brought to an end by Hitler's order dated 24 August 1941 after protests by the Roman Catholic Church.
Just three days after the formal end of Action T4, a lorry arrived at Hartheim with 70 Jewish inmates from Mauthausen concentration camp who were subsequently executed there.
From 1944 on, the prisoners were no longer selected by T4 doctors; the objective was simply to gain space in the Mauthausen camp quickly.
[5]: 292 Other transports came from the concentration camp of Gusen, and probably also from Ravensbrück during 1944, made up of women inmates who were predominantly tuberculosis sufferers and those deemed mentally infirm.
The following execution doctors worked in Hartheim: The Action T4 killing centres had intermediate stations for victims.
Scheiper's sister—who stayed in contact by letter—tracked down a certain Dr. Bernsdorf, employee of the RSHA Berlin-Oranienburg, who was responsible for the clergy imprisoned in the Priest's Block.
[14] Those chiefly responsible for recruiting the lower-ranking staff, according to witness statements, were the two Gau inspectors, Stefan Schachermayr (1912–2008) and Franz Peterseil (1907–1991), as well as Adolf Gustav Kaufmann (1902–1974), head of the inspection department of the T4 central office in Berlin.