Launch of the new pressure chamber laboratory at the University of Zurich; record dives to 575 metres1975: Pressure chamber test No. 258 on 27 November is the first test in the new pressure chamber facility in Zurich. Pressure chamber tests No. 259 and 260 are carried out in Zurich.
1976: Pressure chamber trials No. 261 to 291 are carried out in Zurich.
Albert Bühlmann submits the construction bill for the new pressure chamber to the Government Council of the Canton of Zurich and the other sponsors.