Good footage of the World's largest roller dam on the Mississippi river, United States of America
The Mississippi river between St Louis and St Paul's United States of America.
Full titles read: "A DAM NOVELTY ! The World's largest roller Dam."
L/S's of the strange looking roller dam which crosses the upper Mississippi. The narrator says that the dam has "11 cylindrical roller gates each weighing 200 tonnes." L/S's of the interior of the dam control room. Nice M/S's of a paddle steamer (U.S. Ellen) passing the dam on the river.