Norascon has been awarded a contract to install the Soil-Bentonite Cutoff Wall at Osisko tailings dam project in Malartic. Norascon has joined force with the specialized firm Icanda from Laval to realize this critical task.

Soil-Bentonite Cutoff walls are a productive way to keep dikes and dams from seeping. The cutoff wall is excavated in a continuous manner under bentonite slurry.  The cutoff is keyed in most cases into an impervious stratum or bedrock. Bentonite "filler cake" is developed, and slurry enters into the trench. Impervious backfill is placed into the trench, displacing slurry to form the completed cutoff. Backfill includes soil excavated from the trench and/or from borrowed materials which are blended with slurry to yield a homogeneous mixture.