A major USA dam, completed in 1935, was known as Boulder Dam till 1947 at which point its name was changed to what?
What is the dam in the Black Canyon of the Colorado River on the border between the US states of Arizona and Nevada that was completed in 1935?
At the Krasnoyarsk hydroelectric dam on the Yenisei River, Russia, what method of transport was installed to move boats or ships over or round the dam?
