CLEAN : Nine still missing in South Africa mine bl

The video discusses a mine rescue operation where ministers and a rescue team observed the situation. Eight people were found in a refuge chamber and brought to the surface for medical observation. Challenges such as heat, gases, and smoke hindered rescue efforts. A seismic event caused a fire, complicating the situation further.

How long will the rescued individuals be under medical observation?

What unfortunate event occurred that affected the rescue operation?