Diarmid J MacKintosh TBT Engineering Ltd. 1918 Yonge Street, Thunder Bay, Ontario P7E 6T9, CA 1918 Yonge Street Thunder Bay Ontario P7E 6T9 CA 807-624-5160807-624-5160 dmackintosh@tbte.ca http://www.tbte.ca Measurement Professionals Mitigation Professionals Bookmark Share Facebook Twitter Google+ Tumblr LinkedIn Mail Map Get Directions By public transit Walking Bicycling