JOHANNESBURG — On May 23, 2025, mining company Sibanye-Stillwater reported that about 289 miners were trapped underground at its Kloof 7 shaft near Johannesburg, South Africa. The incident began around 10 p.m. local time on May 22 when a mechanical failure disabled the shaft’s hoist system, preventing workers from reaching the surface.
Incident Details
The Kloof 7 shaft, located roughly 60 kilometers west of Johannesburg in Westonaria, is one of Sibanye-Stillwater’s deepest operations, reaching about 3,200 meters underground. The malfunction involved the conveyance system used to transport ore and miners, which was damaged after a door opened unexpectedly, spilling debris and rendering the shaft inoperable.
All trapped miners have been accounted for and are reported to be safe. They are gathered at a designated underground assembly area and are receiving food and supplies while awaiting rescue.
Rescue Efforts
Sibanye-Stillwater has begun safety inspections and shaft assessments to identify the safest method to bring the miners back to the surface. The company said it aims to resolve the situation by midday on May 23.
The National Union of Mineworkers confirmed it has been informed of the situation and is monitoring rescue efforts closely.
Context
Mining accidents are relatively common in South Africa, home to some of the world’s oldest and deepest gold mines. Earlier this year, at least 78 bodies were recovered from an illegal gold mine after authorities cut off food and water supplies in a crackdown on unauthorized mining.
Sibanye-Stillwater is among the few companies profitably operating in South Africa’s gold sector. The Kloof mine accounts for roughly 14% of the company’s total gold production.
