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