Saturday, November 30, 2013
Friday, November 29, 2013
Building The Hoover Dam
+in+diameter..jpg)
Hoover Dam penstocks and outlet pipes such as this one were fabricated from 45,000 tons of steel and welded into nearly three miles of pipe varying from 8.5-30ft (2.6-9m) in diameter.
More Awesome Photos HERE
Subscribe to:
Posts (Atom)