Excavator at the lignite opencast mining
Schlüsselwörter
black,
brown,
energy,
environment,
history,
industry,
manufacturing,
material,
pattern,
plant,
power,
sky,
steel,
big,
bucket,
car,
carbon,
coal,
conveyer,
deposit,
discover,
earth,
shoveling,
explore,
fossil,
fuel,
geology,
ground,
heat,
large,
lignite,
machine,
mine,
mineral,
mountain,
natural,
nature,
open,
over,
pit,
pollution,
research,
rise,
sand,
scientist,
surface,
texture,
wheel
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