The hoover dam was built in just 5 years which was 2 years under schedule. The total cost of building it was $48.9 million. Concrete has been around for a long time and used to build big structures for thousands of years.
The hoover dam was built in just 5 years which was 2 years under schedule. The total cost of building it was $48.9 million. Concrete has been around for a long time and used to build big structures for thousands of years.