slag discharge at the factory. metallurgy
Keywords
slag,
beautiful,
blast,
blast furnace,
bright,
cast iron,
casting,
current,
dangerous,
factory,
fire,
flaming,
flux,
furnace,
hardening,
heat,
hell,
hellish,
industrial,
industry,
jet,
lava,
metal,
metallurgical,
orange,
ore,
plum,
production