Alloy Plants: • Metalloys The Samancor Manganese Metalloys alloy plant is one of the largest manganese alloy producers in the world. Due to its size and access to highquality feedstock from the Hotazel operations, it is also one of the lowestcost alloy producers. Metalloys produces high and mediumcarbon ferromanganese and silicomanganese. • TEMCO TEMCO is a meduimsized producer of high ...