[Class : 40] Heat Treatment Of Ores, Extraction Of Minerals

[Class : 6] Iron Ore, Manganese Ore, Common Metals And Their Alloys; Metal Building Materials; Transportable Buildings Of Metal; Materials Of Metal For Railway Tracks; Nonelectric Cables And Wires Of Common Metal; Ironmongery, Small Items Of Metal Hardware; Pipes And Tubes Of Metal; Safes; Goods Of Common Metal Not Included In Other Classes, Pelletized Iron.