Hoover Dam

© RicardMN Photography

© RicardMN Photography

Hoover Dam, once known as Boulder Dam, is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the US states of Arizona and Nevada, some 30 miles southeast of Las Vegas Nevada.. It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over one hundred lives. The dam was controversially named after President Herbert Hoover.
At 726 feet high and 1,244 feet long, Hoover Dam was one of the largest man-made structures in the world at the time of its construction, and one of the world’s largest producers of hydroelectric power.

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Alcatraz Island Lighthouse

© RicardMN Photography

© RicardMN Photography

Alcatraz Island Lighthouse. San Francisco, California. 1909.

Alcatraz Island proved to be a huge obstacle in the busy shipping channel of San Francisco Bay. So much so, that the U.S. Government allocated money to construct a lighthouse on the island. The first tower was constructed in 1852, but the third-order Fresnel lens wouldn’t arrive until 1854. This made it the first lighthouse to be built on the West Coast. This tower would serve until 1906 when it was damaged beyond repair in the 1906 earthquake.

A new tower design was put forth after the earthquake. The new tower would be made out of reinforced concrete and would stand 84′ tall. This would be tall enough to tower above the military prison that was built on the island. In 1934, the military prison was upgraded to a maximum security federal penitentiary. Even though the lighthouse keeper was on the outside of the prison walls, they weren’t entirely safe. A riot broke out in 1946 in which many guards and inmates were killed, however, the lighthouse keepers were fine. The station was automated in 1963 right around the same time as the prison closed.

The tower is still an active aid to navigation and can be spotted from almost any point around San Francisco, Oakland, and the Marin Headlands. The tower is all that remains of the old station. The lighthouse keeper’s dwelling was destroyed by fire in 1969 by Native American protesters.

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