機器
area
brown
brown coal
climate
coal
country
digging
earth
electricity
energy
environment
erkelenz
excavation
excavator
garzweiler
geology
german
germany
global warming
heavy
hole
industrial
industry
landscape
large
lignite
machinery
material
materials
mine
open
pit
pollution
power
raw
rwe
sand
sky
soil
surface
surface mine
tagebau
transport
transportation
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