re: Pure oxygen and Bondarenko
In the book, Leonov writes about Bondarenko's death , caused by a pad soaked with alcohol that he accidentally dropped on a heating element inside an isolation chamber bathed in pure oxygen.
The US never knew about it until much later and if they had, it could have saved the Apollo 1 crew.
The SU never used a pure oxygen environment in any spacecraft.
(BTW, Bart Hendrickx was very much appreciated when he translated our questions into russian and Leonov's and Budarin's answers into flemish!).
Raoul