The three suspects are linked to at least 12 kidnapping cases in the North West which targeted hitch-hikers.
Police recovered two mini-busses, illegal mining paraphernalia, gold bearing material and eleven Illegal firearms during the investigation.
The remains of the suspected mineworkers were discovered wrapped in sacks at an abandoned mine shaft in Orkney, just outside Klerksdorp in the North West
Three counts of murder and six of attempted murder are being investigated following a shooting at an Engen Garage in Orkney.