open-pit mining
Schlüsselwörter
coal,
construction,
conveyer,
digging,
dirt,
ecology,
energy,
environment,
equipment,
excavation,
shoveling,
fuel,
geology,
german,
gold,
in,
industrial,
industry,
iron,
landscape,
machinery,
metal,
mine,
mineral,
mining,
open,
ore,
pit,
pollution,
power,
quarry,
resource,
rock
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