Aaron Cofer is a safety products manager for Airgas, Inc. He can be reached at (215) 826-0200 x1 4037 or aaron.cofer@airgas.com. Airgas, Inc. (www. airgas.com), through its subsidiaries, is the largest U.S. distributor of industrial, medical, and specialty gases, and hardgoods, such as welding equipment and supplies and is one of the largest U.S. distributors of safety products.