In February 1990, Professor Jan Markiewicz, director of The Institute for Forensic Research (IFRC) in Kraków conducted a fair experiment where iron compounds were excluded.[6] Given that the ruins of the gas chambers at Birkenau have been washed by a column of water at least 35m in height based on climatological records since 1945,[7]:Introduction Markiewicz and his team were not optimistic at being able to detect cyanides so many years later; nevertheless, having the legal permission to obtain samples, they collected some from areas as sheltered from the elements as possible.[4]
Leuchter's report states that the small amounts of cyanide he detected in the ruins of the crematoria are merely the result of fumigation. However the IFRC points out that the controlled samples they took from living areas which may have been fumigated only once as part of the 1942 typhus epidemic tested negative for cyanide, and that the typhus epidemic occurred before the crematoria at Birkenau even existed.[7]:Final Remarks
The ruins of the Crematorium II gas chamber at Auschwitz-Birkenau.
Accordingly, the IFRC demonstrated that cyanides were present in all of the facilities where it is claimed that they were exposed, i.e. all five crematoria, the cellars of Block 11 and the delousing facilities.[4] Critics state that any attempt to demonstrate that the crematoria could not have functioned as homicidal gas chambers on the basis that they were not exposed to cyanide is unsuccessful, given that its presence in what remains of these facilities is incontrovertible,[5] and write that all of the gas chambers were exposed to cyanide at levels higher than background levels elsewhere in the camp, such as living areas, where no cyanides at all were detected.[4] In addition, tests conducted at Auschwitz in 1945 revealed the presence of cyanides on ventilation grilles found in the ruins of Crematorium II (thus also demonstrating that the Leuchter report was not the first forensic examination of the camp as purported in the title of the London edition).[5] Due to Leuchter's ignorance of the large disparity between the amounts of cyanide necessary to kill humans and lice, instead of disproving the homicidal use of gas chambers, the small amounts of cyanide which Leuchter detected actually tended to confirm it.[8]
http://en.wikipedia.org/wiki/Leuchter_report[/QUOTE]
This is a typical case of trying to make the facts fit the evidence.
So Dr Piper is a liar then? You simply believe what you want to believe.