PSi was contracted to drill and install cable bolts grout and shotcrete the batter wall for the new twin tunnels on the northern bound side of the project, precise drilling was required for the canopy tubes to depth of 13 meters deep, at spacing of 150 mm with 3 rows installed in both tunnels. PSi provided all the equipment including our DPI1100 and Commando Drill to complete the project on time and without any injuries.
