Author:Boshoff, HPDate:1961This report investigates 3 boreholes drilled on the farm Driefontein 70 and Rolfontein 40 in the Amersfoort district and Nooitgedacht 105 in the Ermelo District of Transvaal. Coal cores were used for description and sampling, taken from the ...Read more
Author:Pretorius, EDate:1979During the years 1962 and 1964, seven boreholes were drilled on three farms situated approximately fifteen kilometers south of Delmas by Delmas Colliery Ltd. Of these boreholes three were drilled on the farm Couwenburg, two on Strijdpan and ...Read more
Author:Quass, FWDate:1943This report details a series of six boreholes put down by the Anglo-Transvaal collieries Ltd., on the farm Grootpan in the Witbank District of Transvaal.Read more