Marriage certificates prove inmates were permitted to marry. The Prämienschein (labor money) that could be earned and exchanged for food and items shows a structured incentive system for workers. The Monowitz synthetic rubber/fuels factory, and especially the solid (non-hollow) pillar where Zyklon B was supposedly dropped through are the final nails in the "pure murder camp" utter hoax. The solid pillar is particularly damning for the gas chamber claims. The story requires hollow introduction columns for dropping Zyklon B pellets down into the chamber. Photos and on-site examination (as Toben and others documented) show solid concrete, no hollow core. That single physical detail collapses the mechanism as described. I'm sure there was much sweating going on in response to this Fredrick Toben guy.