Sir Robert N. Kotze (82), SA mining engineer who did much for the promotion of safety in mines and who was mainly responsible f

South African History Online. (2012, March 12). Sir Robert N. Kotze (82), SA mining engineer who did much for the promotion of safety in mines and who was mainly responsible f. South African History Online. https://sahistory.org.za/ref/E-0076777

South African History Online (2012) 'Sir Robert N. Kotze (82), SA mining engineer who did much for the promotion of safety in mines and who was mainly responsible f', South African History Online, 12 March. Available at: https://sahistory.org.za/ref/E-0076777 (Accessed: 12 September 2026).

South African History Online, Sir Robert N. Kotze (82), SA mining engineer who did much for the promotion of safety in mines and who was mainly responsible f [website], https://sahistory.org.za/ref/E-0076777, (accessed 12 September 2026).

"Sir Robert N. Kotze (82), SA mining engineer who did much for the promotion of safety in mines and who was mainly responsible f." South African History Online, 12 Mar. 2012, https://sahistory.org.za/ref/E-0076777. Accessed 12 Sept. 2026.

South African History Online. "Sir Robert N. Kotze (82), SA mining engineer who did much for the promotion of safety in mines and who was mainly responsible f." South African History Online. March 12, 2012. https://sahistory.org.za/ref/E-0076777.