and the production
burning
caster
casting
energy
fire
flame
furnace
fuzzy figure
heat
heavy
industry
iron
lighting
man
manufacturing
material
mature man
melt
melting
metal
metallurgy
nonmaterial cultural heritage
rolling
smelting
smoke
sparkling
steel
stove
technology
the molten metal
thermal
tree
vibrant
while the iron is hot flower
workers
working fluid