150 x 1.5 mm after 1,7 wagh and crushing to -10 mm Floats 1,3.5 14-,3 7,9 1,40 21,9 10,6 1,45 34,3 14,2 Raw coal after de-shaling 100,0 30,8 Floats 1,35 1,40 1,45 Natural arisings 15 x 0,5 mm ... Waterberg region becomes cost-competitive with coal imports. Ten years ago, the mining of 15 million tons of run-of-mine coal for only 1,8 million ...