機器
environmental
alternative energy
backloader
bucket
coal
conveyor belt
crisis
cultivator
destruction
digger
dredging
earth
electricity
energy
excavation
excavator
garzweiler
geology
germany
green
hambach
inden
industrial
industry
krupp
landscape
large
lignite
mine
mining
mover
north rhineland
ore
oredeposit
piglet
plant
power
quarry
rheinbraun
rhineland
rock
rwe
shovel
sustainable
tagbau
takraf
technology
trencher
wheel