GCS was founded in 1987 by Andrew Johnstone after Dames and Moore South Africa had disinvested in South Africa.
The company was initially established to provide groundwater-related studies. It has subsequently expanded its focus and now also offers Hydrology, Hydrogeology, Pedology, Geology, Engineering, Geotechnical and Environmental Sciences.
Our head office is based in Johannesburg, with other operations in Durban and Pretoria as well as in Lusaka (Zambia), Windhoek (Namibia) and Ostrava (Czech Republic).
GCS operates throughout Africa.
While the majority of our work comes from the mining sector, GCS also operates in the private, industrial and oil and gas sectors, as well as government industries.