Our integrated approach allows us to analyze backfill materials, design cost-effective systems for repurposing tailings and execute all required hauling, construction and backfilling services.


Managing inflows and optimizing tailings use for backfill.

PSI’s pursuit of engineering innovation has led to improved backfill systems and better use of tailings to manage inflows and provide structural support.

Building on the insights of our PSIMINE3D™ system and our lab, we develop backfill systems designed to improve structural support while minimizing environmental impact by reusing tailings materials. Our systems are engineered to provide structural stiffness, address creep rates and mitigate water inflows based on the unique needs of the mine and our performance graded specifications.

PSI engineers develop custom backfill solutions that meet necessary standards for fresh and end-product properties such as viscosity, tenacity, adhesion and fracture toughness – designed for use in various mining conditions and delivered as a thickened paste or in high-flow systems.