West Driefontein Gold Mine, Vaal Reefs No 11 Shaft – Transvaal, RSA, 1990
Groundwater in dolomite was intersected from 100 meters to 600 meters depth. At 600 meters, the inflow into the shaft was 624 liters per minute. After 60 days of sealing, the inflow was reduced to 138 liters per minute, allowing normal shaft sinking operations to proceed.
A subsequent contract was awarded to apply SCEM66 to some 30 discrete areas of the tunnel where inflows varied between 1080 liters per minute to less than 1 liter per minute. These areas were all successfully treated with SCEM66 in 10 shifts.
