Feb. 29, 2012 - The biggest scew of the world left for Dunkerque:The biggest screw of the wrold, 42 tons, left to-day Le Havre where it was built for Dunkerque where it
Archimedes' Screw (Illustrations)
What are the biggest screws in the world? - Quora
What are the biggest screws in the world? - Quora
Children ask, the taz answers: How big is the biggest screw? - News in Germany