http://www.tulsaworld.comThe latest news and information from the Tulsa World.5Copyright 2013, World Publishing Co. All rights reserved.SemGroup Corp. CEO Norm Szydlowski, who saw the challenges in international energy issues up close years ago, is looking forward to his visit with a Pakistani delegation on Friday./article.aspx/SemGroup_Pakistani_energy_delegation_to_meet_Friday/20130524_49_E1_CUTLIN243555?rss_lnk=351ROD WALTON World Business EditorFri, 24 May 2013 08:33:30 CDT