Hoover Dam has been voted one of the Top Ten Construction Achievements of the 20th Century.
A poll was commisioned by CONEXPO/CONAGG'99 to determine The Top Ten Construction Achievements of the 20th Century. CONEXPO/CONAGG'99 was a construction, aggregates and ready mixed concrete industries trade show. The show is owned and organized by the Construction Industries Manufacturers Association (CIMA), the National Aggregates Association (NAA) and the National Ready Mixed Concrete Association (NRMCA). Cosponsors include the National Stone Association (NSA) and the Associated General Contractors (AGC) of America.
More than 120 projects, selected by an international panel of industry executives and editors from around the world were reviewed to come up with the top ten. These projects represent more than just concrete, iron and steel. Two of the projects were built during the Great Depression when workers earned $4 a day. Other projects have united a nation and others have brought together different cultures. And others simply provide a gift to the senses, mimic the surroundings or add to the beauty of a city's skyline.
Selection criteria on which the Top 10 were chosen included:
Categories of construction areas considered:
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