… why Jonathan Harrison wrote that Germar Rudolf is lying when he claims that "there are still no traces of any German mass graves or burning sites" in the former Nazi-occupied Soviet territories, here are some links to information on this blog and elsewhere about Soviet postwar crime site investigations, corroboration of these investigations’ results by evidence independent of the Soviets, and current endeavors to find and identify mass graves left behind by Nazi mobile killing operations:
Mass Graves in the Polesie
Neither the Soviets nor the Poles have found any mass graves with even only a few thousand bodies …
Yahad in Unum
The info about recent investigations of massacre sites also shows how nonsensical it is to claim, as Rudolf does, that "any public speculation whether modern methods might not help to locate some [mass graves] is studiously avoided" on grounds that "after all, any such sites have vanished without a trace, thanks to the wondrous methods only the Germans knew about".
This collection includes a number of photographs of mass graves and dead bodies produced by Nazi mobile killing operations in the occupied territories of the USSR, some of which are from Soviet crime site investigations.
Regarding Rudolf’s claim that the massacre at Babi Yar has been "irrefutably proven" to be "an atrocity lie of no substance", see the following articles of the "That's why it is denial, not revisionism" series:
That's why it is denial, not revisionism. Part III: Deniers and Babiy Yar massacre (1)
That's why it is denial, not revisionism. Part IV: Deniers and Babiy Yar massacre (2)
That's why it is denial, not revisionism. Part V: Deniers and Babiy Yar massacre (3)
That's why it is denial, not revisionism. Part VI: Deniers and Babiy Yar massacre (4)