http://www.usbr.gov/lc/hooverdam/faqs/damfaqs.html 4.36 million cubic yards usbr.gov Hoover Dam Hoover Dam, photo Bureau of Reclamation Hoover Dam Hoover Dam required Hoover Dam Bureau of Reclamation: Hoover Dam FAQs Hoover Dam frequently asked questions and answers. U.S. Department of the Interior, Hoover Dam FAQ over 5,000,000,000 barrels Hoover Dams March 1, 1936 Hoover dam FAQs 726 feet tall http://www.usbr.gov/lc/hooverdam/faqs/damfaqs.html http://www.usbr.gov/lc/hooverdam/faqs/damfaqs.html 726 feet tall build 3000 miles of road required only 4.4 million cubic yards required required over 5,000,000,000 barrels U.S. Department of the Interior, Hoover Dam FAQ Hoover Dam, photo Bureau of Reclamation would build Hoover Dam, photo Bureau of Reclamation Hoover Dam over 5,000,000,000 barrels Hoover Dam's generating capacity Hoover Dam over 5,000,000,000 barrels according to the U.S. Bureau of Reclamation Hoover dam FAQs Hoover Dam Hoover dam FAQs Hoover Dam 4.36 million cubic yards The Hoover Damn had an average of 3,500 workers daily Hoover Dam Hoover Dam