The Nkangala District Municipality (NDM) is one of the three district municipalities in Mpumalanga. The district covers an area of 16 758 km² and consists of six local municipalities:
Dr JS Moroka LM,
Steve Tshwete LM,
Nkangala is the economic hub of Mpumalanga and is rich in minerals and natural resources. The Districts' economy is dominated by electricity, manufacturing and mining. These sectors are followed by community services, trade, finance, transport, agriculture and construction.
Although Steve Tshwete LM is primarily associated with agriculture, tourism and forestry and is the main contributor to agricultural activity, the sector is largely underdeveloped. Dullstrom is a service centre for the surrounding agricultural communities, as well as a popular tourist area. Towns and villages in Thembisile and Dr JS Moroka are mainly residential.
Mining and electricity generation are concentrated in the coal-rich area to the south with Middelburg and Emalahleni generating the bulk of the income. The manufacturing sector in Middelburg is increasing at an average annual rate of 16,3%, making it a major contributor to the provinces overall gross value added. Other mineral deposits include refractory (flint) and small deposits of gold, tin, copper, lead, manganese, uranium, nickel, cobalt and silver.
The Middelburg district is also a thriving agricultural district. The major products are maize, livestock, chicken and vegetables / potatoes.