ανθρακωρυχείο, λιγνίτης, ανοιχτή εξόρυξη, εξόρυξη, βιομηχανία, πόροι, παραγωγή ηλεκτρικής ενέργειας, βιομηχανικό τοπίο, εκσκαφέας, εκσκαφέας τροχών κάδου, περιβάλλον
Public Domain
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