機器
bucket
construction
crucible
dark
equipment
factory
fiery
flame
foundry
heat
heavy
hot
industrial
industry
iron
ladle
liquid
manufacturing
material
melting
metal
metallic
metallurgical
metallurgy
metalwork
mill
orange
plant
pollution
production
slag
sludge warehouse
smelt
smelting
sparks
steel
steelworks
technology
transportation
vat
waste
work
workshop