Normandy prefect plays down dangers but warns of contaminated produce Two days after a spectacular fire at the Lubrizol chemical plant, the Prefect of Normandy unveils the results of analyses that show a "usual state of air quality in Rouen", during a press conference. However, he underlined the presence of asbestos on the roofs of buildings and warns families and farmers about the possibility of contaminated agricultural produce. IMAGES AND SOUNDBITES