The geologists Sylvia Horn, Jan van Dongen, Tom Halley and Dr. Heinz Ullrich are looking for niobium, tungsten and uranium in South Africa. Their opponent is the criminal Don Connors, who is also after the raw materials.
The geologists Sylvia Horn, Jan van Dongen, Tom Halley and Dr. Heinz Ullrich are looking for niobium, tungsten and uranium in South Africa. Their opponent is the criminal Don Connors, who is also after the raw materials.
