Immediately after Weltz had completed his negotiations with Ruff, he called a meeting at his institute in Munich, wherein discussions of a technical nature concerning the experiments were held. At this meeting, Ruff, Romberg, Rascher, and Weltz were in attendance. This meeting was at Weltz’ Institute and Weltz presided over the meeting. It was further decided that a second meeting was to be held at Dachau a few days later in order to make the necessary arrangements with the camp commander. This trip took place in order to discuss technical preparations with the camp commander, and to arrange details concerning the selection of the experimental subjects. Again, Weltz, Ruff, Romberg, and Rascher were in attendance, in addition to Piorkowski, the camp commander, and Schnitzler of the staff of the Reichsfuehrung SS. (_NO-476, Pros. Ex. 40_; _NO-437, Pros. Ex. 42_; _NO-263, Pros. Ex. 47_; _Tr. pp. 7086-7_.) After the arrangements with the camp authorities at Dachau had been completed, the shipment of the low-pressure chamber from Berlin was the next problem to overcome. As pointed out earlier, Weltz desired the low-pressure chamber which was possessed by Ruff and Romberg for use in the experiments at Dachau. It is interesting to note that Weltz had had a low-pressure chamber available in his own institute from 1938 on (_Tr. p. 7178._), and that Weltz testified that volunteers from his student body or from the Luftwaffe were available. (_Tr. pp. 7180-83._) Despite this, it was necessary to resort to the concentration camp for inmates and, in order to conduct the experiments, a mobile pressure chamber had to be brought down from the Ruff Institute in Berlin, as the low-pressure chamber in the Weltz Institute was not mobile. The mobile low-pressure chamber from Ruff’s Institute at Berlin was driven to Weltz’ Institute in Munich and arrived in the late afternoon. This chamber was driven to Munich by employees of the DVL and turned over to Weltz. On the following day, SS drivers came from Dachau, received the keys to the chamber and drove it to the concentration camp. (_Tr. p. 7199._) The purpose in camouflaging this activity was to deceive the employees of the DVL because Weltz and Ruff did not want them to know that the low-pressure chamber was to be used in an experimental program at a concentration camp. This is borne out by the fact that a completely new set of drivers came from the concentration camp to take the chamber to Dachau. This particular action of secrecy is noticeable when it is considered that Dachau is merely 12 kilometers from Munich and actually the DVL drivers had to go out of their way to deliver the chamber to the Weltz Institute. Ruff testified that the secrecy in the transfer of the chamber to Dachau was for security reasons. (_Tr. p. 6550._)