On the Fact that My First Question for Holocaust Industrialist, Deborah Lipstadt, Would Be......

My dear Mrs. Lipstadt, you claim that 700,000 Jews were murdered via diesel gas at Treblinka (an absurdity in and of itself in that diesel is the least efficient way to suffocate even ONE person, never mind hundreds of thousands), buried, dug up, and then cremated outside via huge wood fires (an act that would have probably required more wood than any other in recorded history). Where did the Nazis get the wood? I ask because there currently exists no record of the Germans ordering massive amounts of wood and neither is there any record of mass deforestation. Please, I ask you, solve this riddle for me.