The biggest industrial sector within South Africa is the privatized metal production and engineering sector run by ISCOR. South Africa is the biggest producer, worldwide of platinum, manganese, titanium, chromium, gold, vanadium as well as aluminum-silicates. It is also the fifth largest producer of zinc, coal, lead, and uranium in the world. The industry of steel production provides resources for the motor vehicle industry, which has increased in demand since the year 2000. The mining sector of South Africa comprises of 50-70% of the country's exports.