Pretoria is an important industrial centre, with heavy industries including iron and steel casting as well as automobile, railroad and machinery manufacture. It is the headquarters of the South African Iron and Steel Corporation, ISCOR, which produces most of South Africa's steel.
The Greater Pretoria metropolitan area has a powerful influence on the national economy, with about 9% of the national Gross Geographic Product produced there. The metropolitan economy is dominated by a few sectors such as the government and the motor vehicles and parts manufacturing industry. Small businesses are growing in importance, especially for job creation. Most of the economic activity in the area is concentrated in the Pretoria municipal area.
Sources: SA Dept. of Environmental Affairs and Toursim [http://www.deat.gov.za]; Wikipedia