Work is stopped at the Kimberley mine after forty-three years when it becomes uneconomical to operate at a depth of 1 083 m.

South African History Online. (2012, July 31). Work is stopped at the Kimberley mine after forty-three years when it becomes uneconomical to operate at a depth of 1 083 m.. South African History Online. https://sahistory.org.za/ref/E-0089285

South African History Online (2012) 'Work is stopped at the Kimberley mine after forty-three years when it becomes uneconomical to operate at a depth of 1 083 m.', South African History Online, 31 July. Available at: https://sahistory.org.za/ref/E-0089285 (Accessed: 28 September 2026).

South African History Online, Work is stopped at the Kimberley mine after forty-three years when it becomes uneconomical to operate at a depth of 1 083 m. [website], https://sahistory.org.za/ref/E-0089285, (accessed 28 September 2026).

"Work is stopped at the Kimberley mine after forty-three years when it becomes uneconomical to operate at a depth of 1 083 m.." South African History Online, 31 July 2012, https://sahistory.org.za/ref/E-0089285. Accessed 28 Sept. 2026.

South African History Online. "Work is stopped at the Kimberley mine after forty-three years when it becomes uneconomical to operate at a depth of 1 083 m.." South African History Online. July 31, 2012. https://sahistory.org.za/ref/E-0089285.