black
bowl
bright
bucket
cast
casting
covered
crust
cup
factory
fire
flame
flowing
foundry
freezing
furnace
glowing
glows
gold
heat
heavy
hot
industrial
industry
inside
iron
ladle
lava
manufacture
manufacturing
melt
metal
metallic
metallurgical
metallurgy
mill
mold
molten
orange
red
slag
solidified
steel
stone
surface
thick
top
trash
yellow