text_combined: questionable mail suspicious packages potential use biological agents anthrax terrorist attack continues raise concerns worldwide enron mail center business controls corporate security already implemented safeguards mail entering enron buildings screened accordance procedures identifying suspicious packages also touch u postal service centers disease control ensure complete date guidance handling possible anthrax exposures however receive envelope package feel comfortable opening please contact corporate security extension 3 6200 screen provide enron employees better understanding anthrax potential danger poses posted bulletin corporate security intranet site http home enron com 84 security 002 _ bull _ 001 html includes links cdc usps resources