CEMENTATION

Mine construction, namely, shaft sinking, raise boring and alimak raising, soft ground and hard rock tunneling, and shotcreting; installation of electro-mechanical mine infrastructure; mining extraction of metals, [ evaporates, and coal; ] underground cavern construction; [ environmental remediation services, namely, waste disposal for underground mines; ] underground structural repairs of mines

Mine salvage and closure

[ Environmental remediation services, namely, water treatment and air purification services of underground mines; ] environmental remediation services, namely, grouting and ground treatment of mines

Turn-key mine developments, namely designing and engineering of turn-key mines; designing and engineering of mines