機器
big
brown coal
bucket
bucket wheel
coal
construction
dig
digger
digging
earth mover
equipment
excavation
excavator
exploitation
fossil fuel
fossilfuel
garzweiler
giant
heavy
heavy equipment
huge
industrial
industry
large
load
machinery
metal
mine
mining
mining industry
open pit
open pit mine
openpit
production
quarry
sand
site
surface mine
wheel
work
working