Dubuque man charged with mailing pipe bombs to investment companies
                                
                                
                                    (Newser) -
                                    Police nabbed "The Bishop"—the bandit who's been sending unwired pipe bombs to Midwestern investment firms for the last two years—they announced yesterday. John P. Tomkins, a 42-year-old machinist in DuBuque, Iowa, was charged with one count each of mailing an extortion letter and possessing an unregistered...