It was also proved by experiments that air embolism occurs in practically all vessels even while pure oxygen is being inhaled. One VP was made to breathe pure oxygen for 2½ hours before the experiment started. After 6 minutes at a height of 20 kilometers, he died and at dissection also showed ample air embolism, as was the case in all other experiments. At sudden decreases in pressure and subsequent immediate falls to heights where breathing is possible, no deep reaching damages due to air embolism could be noted. The formation of air embolism always needs a certain amount of time. [Signed] DR. RASCHER PARTIAL TRANSLATION OF DOCUMENT NO-402 PROSECUTION EXHIBIT 66 LETTER, 29 SEPTEMBER 1942, AND REPORT, 28 JULY 1942, FROM ROMBERG AND RUFF TO HIMMLER CONCERNING EXPERIMENTS ON RESCUE FROM HIGH ALTITUDES German Aviation Research Institute Berlin-Adlershof, Rudower Ch. 16-25 [Stamp] Secret To the Reich Leader SS Berlin SW 11 Prinz-Albrechtstr. 8 Your Ref. Your communication of DVL-Ref. Day R/Ru/Ko 2098/42, 22 September 1942 Military Secret Re: Report “Experiments on Rescue from High Altitudes” [handwritten] to files B [initial] Enclosed we submit copies Nos. 2, 3, and 4 of the report “Experiments on Rescue from High Altitudes” for your files. German Aviation Research Institute per procura [Signed] DR. ROMBERG L. RUFF [handwritten] Report-3-received 2 November [Signed] SIEVERS, SS Oberfuehrer _3 enclosures_ Personal Staff Reich Leader SS 29 September 1942 Diary No. 1348/42 To RF [handwritten] 1943 Top Secret [stamp] EXPERIMENTS ON RESCUE FROM HIGH ALTITUDES.[24]