C
CHEMISTRY; METALLURGY
C
CHEMISTRY; METALLURGY
C21
METALLURGY OF IRON
C21
METALLURGY OF IRON
C21C
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
C21C
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
2200/00
Recycling of waste material
2200/00
Recycling of waste material