Hundreds of workers remain underground at the Kloof gold mine near Johannesburg after a "shaft incident" occurred at Sibanye Stillwater's sub-shaft, officials said.

Rescue efforts are underway in South Africa to bring 260 workers trapped in a gold mine for a day back to the surface, the Sibanye Stillwater mining company said on Friday. According to the company, an initial investigation showed that a sub-shaft rock winder skip door opened at the loading point and caused some damage to the mineshaft at the Kloof mine,