Préverenges consulting practice led by Dr Frédéric Haldi, Dr sc. EPFL and physicien dipl. SIA, who is registered in the Swiss Experts chamber of technical and scientific court experts under three fire specialisms — Branduntersuchung (fire investigation), Brandschutz (fire protection) and Explosionsschutz (explosion protection). No other expert on the Swiss register holds more than two, and he is additionally an Expert AEAI/VKF, the Swiss fire authority’s own qualification. Reports in German, English, French and Russian.