17 February 2017
On 17 February 2017, six people were killed and more than a dozen injured at the Salisbury Island Naval base in Durban. Three of the six people involved were South African National Defence Force (SANDF) soldiers, while the other three were part of a team contracted to do work at the naval base. The accident was as a result of an unexpected gas leak. The men had reportedly been underground and working in a partially flooded shaft inside a neglected building at the naval base when the gas leak occurred.
References

Jeff Wicks. Sowetan live. Three soldiers die in ‘freak’ gas leak at Durban naval base. [Online]. [Available: https://www.sowetanlive.co.za/news/2017/02/17/update-three-soldiers-die-in-freak-gas-leak-at-durban-naval-base].. [Accessed : 18 February 2017].| Jeff Wicks.Herald live. Six people die in ‘freak accident’ at Durban’s naval base. [Online].[Available: https://www.heraldlive.co.za/news/2017/02/17/breaking-several-dead-apparent-gas-leak-durban-harbour]. [Accessed: 18 February 2017].