Kitty Hart, in spite of her name a Jewish survivor born in Poland, fully confirms these figures [in http://forum.codoh.com/viewtopic.php?t=892 ]:
'Working around the clock, the four units together could dispose of about 18,000 bodies every twenty-four hours, while the open pits coped with a further 8,000 in the same period.'
(p 118; Return to Auschwitz - paperback edition by Granada (1981, 1983).
According to the cover blurb:
'The subject of the award-winning Yorkshire television documentary of the same name.'
'Both engaging and harrowing...an important addition to the growing holocaust literature, very little of which conveys so courageously both the daily torment and the will to survive'
- Martin Gilbert, The Times.