Victor Fitzmaurice, who holds a bachelor of science in mining engineering, was appointed as operations general manager with Rare Earth Extraction, a unit of Great Western.
Fitzmaurice will be responsible for of all development stages to move the Steenkampskraal project toward production, Great Western said.
Among his duties, he will be in charge for the day-to-day management of rare earth mining, chloride production and separation operations.
Fitzmaurice has a graduate diploma in mining, engineering and mineral economics from the University of Witwatersrand.
The second appointment, Andreas Muntingh, will be mine geologist, executing all geology related development, production and exploration at the mine site.
Muntingh, who holds a Bachelor of Science in geology from the University of Stellenbosch, will also help design, implement and execute the Steenkampskraal exploration project.
A speaker of both Afrikaans and English, he has worked in senior geological positions with the likes of PlatinumAustralia, Energem Resources and Trans Hex Operations.
Great Western Minerals is a rare earth processor. Its specialty alloys are used in the magnet, battery, defence and aerospace industries.
Produced at the company's subsidiaries in the U.S. and the U.K., the alloys contain aluminum, nickel, cobalt and rare earth elements.
As part of its vertical integration strategy, Great Western also holds 100 per cent of Rare Earth Extraction Co. Limited, which owns a 74 per cent equity stake in the Steenkampskraal mine in South Africa.
It also holds a portfolio of rare earth exploration properties in North America.