(For details of gold-mining, see Gold.) A railway traverses the Rand, going westward past Krugersdorp to Klerksdorp and thence to Kimberley, and eastward past Springs to Delagoa Bay.
Other towns within the Witwatersrand district are Germiston (29,477), Boksburg (14757) and Roodepoort-Maraisburg (19,949), virtually suburbs of Johannesburg, and Krugersdorp (20,073) and Springs (5270), respectively at the western and east ends of the district.
(3) A line from Krugersdorp to Zeerust (128 m.).
The chief method employed for their destruction is spraying the swarms with arsenic. The districts with the greatest area under cultivation are Heidelberg, Witwatersrand, Pretoria, Standerton and Krugersdorp. The chief crops grown for grain are wheat, maize (mealie) and kaffir corn, but the harvest is inadequate to meet local demands.