Concerns about crop pollution after chemical factory fire Authorities in northern France have temporarily banned the harvesting of crops and sale of produce of animal origin from the region as a precautionary measure after a massive fire ravaged a chemicals factory in the city of Rouen last week. Samples are due to be tested today in a bid to remove concerns about the possible presence of chemicals in crops, according to Oise Prefect Louis Le Franc. IMAGES AND SOUNDBITES