ANKENY, Iowa-- The U-S Postal Service in Ankeny faces a fine of more than $184,000 for alleged workplace safety violations. The Occupational Safety and Health Administration inspected the post office after a complaint from the National Association of Letter Carriers. OSHA's report says inspectors found blocked exit routes. It also says employees weren't trained on emergency procedures.The U.S. Postal Service can pay the fine, request a meeting with OSHA or contest the findings.