Two mineworkers who were rescued Thursday night after being trapped underground at AngloGold’s Ashanti’s Mponeng mine near Caltonville west of Johannesburg are reported to be in a stable condition in hospital.

Two of their colleagues died following a seismic activity which resulted in the ground collapsing.

Four others were rescued on Thursday.

Production at the mine has since been suspended.

The National Union of Mineworkers’ Eric Gcilitshana says seismic activitities are worrying.

He says a thorough investigation must be made into what is triggering these seismic activity in the area of Carltonville and Klipton.

‘Remember there was another one in Kilpton in TauLekoa, one in Kusasalethu which is Carletonville area and there were two bumps in Mponeng which means these bumps are increasing now,” says Gcilitshana