Copperbelt strikes and massacre
Anglo American refused to increase wages in Nkana, which was followed by several strikes across the Copperbelt involving about 3,000 protestors who fought with the police. The strike left 13 workers killed by the police and 71 more injured.
Munene, Hyden. “A History of Rhokana/Rokana Corporation and its Nkana Mine Division, 1928-1991.” PhD diss., University of the Free State, 2018.