Fanagalo was used extensively in gold and diamond mines because the South African mining industry employed workers on fixed contracts from across southern and central Africa: including Congo, Zimbabwe, Zambia, Botswana, Malawi and Mozambique. With workers originating from a range of countries and having a vast range of different mother tongues, Fanagalo provided a simple way to communicate and is still used as a training and operating medium. Fifteen hours instruction was considered sufficient for an initiate to become reasonably fluent. See Witwatersrand Native Labour Association.