black
bright
bucket
cast
casting
covered
cracked
crust
cup
factory
fill
fire
flow
flowing
foundry
furnace
glowing
gold
heat
heavy
hot
industrial
industry
iron
jet
ladle
large
liquid
manufacture
manufacturing
melt
metal
metallic
metallurgical
metallurgy
mill
mold
molten
orange
plant
pour
poured
red
slag
spark
steel
surface
work
workshop
yellow