environmental
abandoned
blast
blastfurnace
brown
building
burning
carriage
cast
clouds
coal
construction
ecological
engineering
equipment
exterior
factory
fire
foundry
fumes
furnace
heavy
industrial
industrialization
industry
iron
manufactures
manufacturing
metallurgical
metallurgy
metalworking
pipe
pipeline
piping
plant
process
production
railway
rusty
scenery
smog
steam
steel
steelworks
thermal
tower
tubing
waste
works
workshop