After successful completion of the TMA Stage 2 Raise, SNL completed the Stage 2 Overbuild in preparation for future dam development. Construction consisted of 1,200,000 m3 of clay core and blast rock shell across 8.5 km of the Tailings Dams. SNL also completed 9 dam abutments consisting of bedrock treatment including washing, slush grout, and dental concrete placement. The work took place through fall/early winter conditions and required many controls to be successful, including but not limited to heating and hoarding, reconditioning materials, and hot seating operators to maintain live work fronts.
