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Tunneling for railroad tracks in an autumn forest area with construction workers and machines,
BRK25L07_429

Tunneling for railroad tracks in an autumn forest ...

Railway tunnel construction in an autumn forest environment seen from the air, Hermann-Hesse-Bahn
BRK25L00_011

Railway tunnel construction in an autumn forest en...

Air pressure driven drilling machines and cylinders with compressed air during tunnel construction through Mont Cenis
BRK22C14_432

Air pressure driven drilling machines and cylinder...