Tailings Pond, Campbell River BC. Ore mined at a depth of 1500 feet is conveyed to the surface and processed to extract minerals. Resultant rock waste slurry, called tailings is piped to a containment area referred to as a pond and stored on dry land. We constructed 45 acres of tailings ponds for Westmin Resources that required the diversion and relocation of mountain creeks and valley rivers, installing extensive underground drainage piping in order to restrict the leeching of the waste slurry into the mine’s surrounding ecosystems.