Silicon manganese
Manganese Ferro Silicon.
Sulphur, iron pyrite
Iridium, silver mercury, nickel
Ferro Silicon Manganese, Manganese
Silicon manganese
Iridium, Silver Mercury, Nickel
Ferro silicon manganese
Ferro silicon, manganese
Iridium, nickel, silver mercury
Ferro silicon, ferro chrome
Steel mills, silicon smelters, phosphorus smelters