Doug McNab » Directory View All Clear Search Go back to directory. Add to Address Book. Doug McNab VP of Operations Tri Dal Excavation, Ltd. Work 540 Commerce St Southlake TX 76092 work Phone: 817-424-4386work Fax: 817-481-0825workfax Email: doug_mcnab@tridal.comINTERNET Website: www.tridal.com Website: Download vCard