acid
blue
brown
chemical
chemistry
chiming
chimney
cliff
coal
contamination
copper
copper smelting
cuprum
danger
dead
disaster
ecology
environment
exploitation
extract
fabric
flue
harm
industry
iron
ironworks
karabash
landscape
manufacture
masrian
metallurgy
mining
nature
orange
ore
pit
plant
poisoned
pollution
rock
rubbish
smelting
soil
stack
structure
tailings
territory
unnatural
waste
yellow
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