The Tunnelling Association of Canada and the Northwest Chapter of the North American Society for Trenchless Technology are pleased to welcome you to TT2018, the 2018 TAC/NASTT-NW Tunnelling and Trenchless Conference. Featuring the theme: Innovation in Underground Infrastructure, the two-day conference will include plenary presentations, technical sessions, and a trade exhibition all designed to highlight innovation in tunnelling and trenchless technology – throughout Canada and around the world.