Mine Tailings Facility Reclamation and Closure
Project Highlights
Integrated Sustainability constructed a cover system for the closure of a mine tailings facility.Integrated Sustainability was engaged under a lump-sum turnkey delivery model to execute site development, tailings backfill, spillway installation, and toe berm expansion.
Project Deliverables
- Delivered engineered toe berm extension with sub-excavation to expose existing drain rock and lift-by-lift geotextile placement
- Dewatered approximately 61,000m3 of water for release
- Handled monitoring of discharge rates and total suspended solids required for regulatory compliance
- Supported the move to passive closure by eliminating ponded water behind the tailings and dam, increasing dam stability
- Constructed new spillway with rock blasting, geosynthetic liner installation, and energy dissipation structures to control runoff during high-flow events
- Backfilled the tailings pond using on-site and imported material
- Installed tailings cover and completed surface grading using GPS-enabled equipment
