black
bright
cup
energy
engineering
equipment
factory
ferrous
fire
flame
flow
flowing
foundry
furnace
heat
heavy
hot
industry
ladle
light
liquid
manufacture
manufacturing
material
melt
metal
metallic
metallurgy
mold
molten
mould
orange
plant
pour
power
production
push
railroad
railway
shiny
slag
smelt
spark
steel
stream
technology
temperature
transport
vessel