機器
barren
brown
carbon
chiming
coal
coal mine
coalmine
country
desolate
desolation
destroyed
destruction
dig
digging
dirt
earth
engine
environment
equipment
excavation
excavator
exploit
exploitation
extract
geologic
heavy
industrial
industry
landscape
machinery
manufacture
metal
mill
mine
mineral
mining
piled
piles
pollution
resources
sand
scar
soil
tailing
tailings
tractor
transportation
works