Elandsrand Gold Mine – Shaft Sealing – Carletonville, RSA, 1979

In 1979, the sinking operation of the M/M shaft was delayed due to excessive high volume water ingress at pressures exceeding 700 psi (about 50 bar). Grouting of this shaft was the first high pressure underground water ingress problem solved with SCEM66 (now known as NOH2O). All major leaks in the shaft lining were successfully grouted using 10 mm hydraulic injectors. The shaft was inspected 10 month later, and there were no signs of deterioration or leakage in the areas treated.