Following nationalisation of the mining sector, its contribution to GDP fell from 3 to 4 per cent in the 1960s to just 1 per cent in 1981 (Lange, 2006). Most of this contribution was derived from the Williamson diamond mine, which, at the time, accounted for over 70 per cent of total mineral production (Lange, 2006, p. 3). Despite the ...Web