- 1867
- Diamonds discovered in Orange Free State and Kimberley.
- 1867
- Diamond mining begins in Griqualand West.
- 1872
- Introduction of pass laws to control labor force in Kimberley diamond mines.
- 1873
- Diamond diggers exceed 50,000
- 1886
- Gold discovered at Witwatersrand; Johannesburg established.
- 1889
- Cecil Rhodes already extremely wealthy from diamond mining, set his ambitions north of the Limpopo and tricked Lobengula, the King of the Ndebele into handing over his land. Ndebele thought he was granting Rhodes a limited mining concession.
- 1907
- White miners strike against Chinese labor
- 1922
- Army quells miners' strike, killing 214
- 1941
- African workers formed the African Mine Workers Union
- 1943
- In order to stave off the growing unrest among the African mine workers, the regime appointed a Commission of Enquiry
- 1946
- They called a general strike. Nine men were killed, and seventy men were dismissed. The union was subsequently banned. The need for more cheap black labour after the Second World War led the South African government to look for migrant workers outside South Africa, mainly from Mozambique and Malawi.
- 1970
- Anglo American became the biggest mining group in southern Africa. It had a high commercial profile, worldwide. Anglo American had a controlling interest in mines in Botswana and Zambia.
- 1987
- 250,000 African mineworkers strike