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When Did the Hoover Dam Start Construction?

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Title: The Hoover Dam: A Remarkable Engineering Feat Completed Ahead of Schedule Introduction: The construction of the Hoover Dam stands as a testament to human ingenuity and determination. Completed in a time of economic crisis, this engineering marvel not only provided a reliable source of hydroelectric power and water for the American Southwest but also defied expectations by finishing ahead of schedule. In this review, we will delve into the completion of the Hoover Dam, exploring its significance, the timeline of construction, and the remarkable achievement of finishing ahead of schedule. Construction Timeline: The construction of the Hoover Dam began in 1931, amidst the Great Depression, and posed significant challenges due to its scale and the harsh conditions of the Colorado River. Originally estimated to take five years to complete, the project's construction was an ambitious endeavor. However, the relentless efforts of thousands of workers, engineers, and visionaries brought this monumental structure to life. Ahead of Schedule Completion: Despite the immense scale and complex nature of the project, the Hoover Dam was completed a full two years ahead of schedule. Construction efforts were primarily focused on the dam itself, the power plant, and the associated infrastructure. The completion of the dam in 1935 not only showcased exceptional project management but also demonstrated the resilience and adaptability

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The construction of the hoover dam was the result of what kind of government

Title: The Hoover Dam: An Epic Government Endeavor! Hey there, fellow history enthusiasts! Today, we're diving into the fascinating story behind the construction of the mighty Hoover Dam and how it came to be thanks to a particular kind of government. So, buckle up and get ready for an exhilarating ride through time! Picture this: It's the early 20th century, and the United States is facing some serious challenges. The Great Depression has dealt a heavy blow to the nation's economy, leaving many families struggling to make ends meet. To combat this crisis, the government needed a bold and ambitious plan. And thus, the construction of the Hoover Dam was born! Now, let's address the elephant in the room. What kind of government are we talking about here? Well, folks, it was none other than the good ol' US of A! That's right, the construction of the Hoover Dam was the result of a determined and resourceful American government. Back in those days, the idea of a colossal dam spanning the mighty Colorado River was nothing short of audacious. But the government saw the potential for greatness, not only in terms of providing much-needed jobs but also in harnessing the power of nature to generate electricity and control water flow for irrigation.

How did they stop the water to build the Hoover Dam?

To divert the Colorado River's flow around the Hoover Dam construction site, four 56-foot-diameter tunnels were driven through the walls of Black Canyon, two on the Nevada side and two on the Arizona side. Their combined length was nearly 16,000 feet (more than three miles).

How much longer will the Hoover Dam last?

While the dam is expected to last for centuries, engineers predict the structure could last for more than 10,000 years, surpassing most remnants of human civilization if humans were to disappear from the earth. However, they also predict the dam's turbines without human intervention would shut down within two years.

Is the Hoover Dam concrete still curing?

In short, yes – the concrete is still curing, harder and harder every year even in 2017 some 82 years after the construction of Hoover Dam was completed in 1935.

What was the Hoover Dam called between 1933 to 1947?

Boulder Dam

The following article was taken from the September 1933 issue of Fortune Magazine. At that time the name of the dam had switched from Hoover to Boulder Dam. It would stay Boulder Dam until 1947, when Congress changed the name back to Hoover Dam.

When did the construction of the Hoover Dam start and end?

How long did it take to build the dam, powerplant, and appurtenant works? Five years. The contractors were allowed seven years from April 20, 1931, but concrete placement in the dam was completed May 29, 1935, and all features were completed by March 1, 1936.

Frequently Asked Questions

How many months did it take to build the Hoover Dam?

How long did it take to build the dam, powerplant, and appurtenant works? Five years. The contractors were allowed seven years from April 20, 1931, but concrete placement in the dam was completed May 29, 1935, and all features were completed by March 1, 1936.

What are 5 facts about the Hoover Dam?

10 Interesting Facts About The Hoover Dam
  • The dam is located on the border between Nevada and Arizona.
  • It is named after President Herbert Hoover.
  • Construction of the dam began in 1931 and took five years to complete.
  • The dam cost $49 million to build.
  • It stands 726 feet tall and is 1,244 feet long.

What year will the Hoover Dam concrete cure?

Now we are all vaguely aware that concrete heats and contracts as it cures, but that isn't usually a problem on any of our jobs. For the Hoover Dam, however, it was calculated that, make it in a continuous pour, and it would take 125 years to cool and would crack and crumble!

When did they start building dams?

People have used dams for many centuries to help prevent flooding. The ancient Mesopotamians may have been some of the first humans to build dams. The oldest known dam is the Jawa Dam, located in present-day Jordan. It was built in the fourth century B.C.E.

How far ahead of schedule was the construction of the Hoover Dam when it was completed in September of 1935?

Two years ahead

Work actually began during the summer and continued around the clock until the dam was completed in 1935, two years ahead of schedule. By this time, Franklin D. Roosevelt, a Democrat, had been elected president.

When was the last time water went over the spillway at Hoover Dam?

The spillways have been used twice. The first time, in 1941, was a test of the system. The second time, in 1983, was for a flood.

Have the Hoover Dam spillways ever been used?

As the flood peak decreases, the gate can be operated manually so as to gradually empty the flood control portion of the reservoir without creation of flood conditions down stream. The spillways have been used twice. The first time, in 1941, was a test of the system. The second time, in 1983, was for a flood.

What city was created for the Hoover Dam?

Boulder City

Essentially a government reservation, Boulder City was constructed in 1932 for dam workers and their families. Bechtel Corporation. For citizens shaken by the tumultuous effects of the Great Depression, the Hoover Dam project provided two essentials that were in short supply: work and housing.

What city did the Hoover Dam give birth to?

To house the workers, Secretary of Interior Ray L. Wilbur envisioned a model of city planning, giving birth to Boulder City. Wilbur intended for the city to be temporary, to disappear once the dam was complete, but it didn't work out that way.

What city is powered by the Hoover Dam?

Nearly half of the generated electric power goes to the Metropolitan Water District of Southern California, the city of Los Angeles, and other destinations in southern California; the rest goes to Nevada and Arizona.

What is the name of the reservoir created during the construction of the Hoover Dam?

Lake Mead

Created in the 1930s as part of Hoover Dam [see also Elwood Mead], Lake Mead provides water storage in the Lower Basin of the Colorado River. The reservoir is designed to hold 28,945,000 acre-feet of water and at 248 square miles its capacity is the largest in United States.

What city boomed because of the Hoover Dam?

The cost of building Hoover Dam was offset by generating and supplying hydroelectric power (with 17 turbines, it could provide power to 1.3 million homes). All of these benefits from the dam led to the growth of areas like Las Vegas, Los Angeles and Phoenix.

When did the Hoover Dam begin construction?

1930

The bill passed on December 18, 1928 and President Herbert Hoover signed a proclamation on June 25, 1929 making the Compact effective. Appropriations were approved and construction began in 1930. The dam was dedicated in 1935 and the hydroelectric generators went online in 1937.

During what major event was the Hoover Dam built?

The Great Depression

But the dam also had an entirely unexpected result, one that began while it was still under construction. For millions of people in the 1930s, including those who would never visit it, Hoover Dam came to symbolize what American industry and American workers could do, even in the depths of the Great Depression.

Which policy type led to the construction of the Hoover Dam?

Workers construct the Hoover Dam, a distributive policy project, in Nevada in 1932.

Why did they build the Hoover Dam?

Upon becoming Secretary of Commerce in 1921, Hoover proposed the construction of a dam on the Colorado River. In addition to flood control and irrigation, it would provide a dependable supply of water for Los Angeles and Southern California.

Why was the Hoover Dam built during the Great Depression?

A project for the ages

Built during the Great Depression, the dam would tame the flood-prone Colorado River southeast of Las Vegas―protecting cities and farms, generating cheap electricity to supply power to homes and industry, and providing work for thousands who desperately needed jobs.

What does the Hoover Dam represent?

For millions of people in the 1930s, including those who would never visit it, Hoover Dam came to symbolize what American industry and American workers could do, even in the depths of the Great Depression.

Which part of our government is responsible for the construction of Hoover Dam?

The dam is under the direct supervision of the Washington and Denver offices of the U.S. Government's Bureau of Reclamation; actual designs of all its features are made in the Denver office. It is being built by a group of western contractors, calling themselves the Six Companies.

How long did it take the concrete in the Hoover Dam to cure?

125 years

The Hoover Dam concrete would cure in 125 years by conventional or natural methods. Crews, however, used some innovative engineering methods to hasten the process. Nearly 600 miles of steel pipes woven through the concrete blocks significantly reduced the chemical heat from the setting for the concrete.

How far ahead of schedule was the Hoover Dam completed?

Hoover Dam was the most expensive engineering project in U.S. history at the time of its construction. The project was completed two years ahead of schedule and cost less than the original budget of $49 million.

How long did it take to fill up Hoover Dam?

The reservoir did not reach elevation 1,045 feet above mean-sea-level (msl), the elevation of the upper outlet works, until 1 May 1937. The reservoir filled to an elevation of greater than 1,200 feet (normal maximum) above msl, by mid-1941. So in total the reservoir took about 7 years to fill.

FAQ

Is the cement in the Hoover Dam still wet?

Is Hoover Dam Concrete Still Curing? In short, yes – the concrete is still curing, harder and harder every year even in 2017 some 82 years after the construction of Hoover Dam was completed in 1935.

What year did Hoover Dam overflow?

1983

August 1983.

Who was responsible for the Hoover Dam's construction?

Six Companies Inc.

A consortium called Six Companies Inc., which included Bechtel, won the right to build the concrete arch dam, at a cost of nearly $49 million—a staggering amount in the early 1930s (roughly equivalent to $860 million today).

Who was the construction manager of the Hoover Dam?

Francis Albert Trenholm (Frank) Crowe

Part of the success of the Hoover Dam project is directly attributable to the work of Francis Albert Trenholm (Frank) Crowe, the general superintendent of Six Companies, Incorporated.

Who was the project manager of the Hoover Dam?

Manager Frank Crowe

Six Companies Inc. played the role of the main contractor with the project manager Frank Crowe, who was coordinating work and had an obligation to deliver the dam within seven years.

Who was President when Hoover Dam was built?

President Herbert Hoover

The bill passed on December 18, 1928 and President Herbert Hoover signed a proclamation on June 25, 1929 making the Compact effective. Appropriations were approved and construction began in 1930. The dam was dedicated in 1935 and the hydroelectric generators went online in 1937.

Who was the chief engineer for the Hoover Dam?

Francis Trenholm Crowe

Francis Trenholm Crowe (October 12, 1882 – February 26, 1946) was the chief engineer of the Hoover Dam.

Who ordered the government to build the Hoover Dam?

The original timetable called for Boulder City to be built before the dam project began, but President Hoover ordered work on the dam to begin in March 1931 rather than in October. The company built bunkhouses, attached to the canyon wall, to house 480 single men at what became known as River Camp.

When did construction start for the Hoover Dam?

July 7, 1930

On July 7, 1930, construction began on the Hoover Dam. President Herbert Hoover was deeply devoted to protecting the environment, particularly focusing on pollution-free water, flood control, and fisheries.

Did the government build the Hoover Dam?

Building the dam was too expensive for one company to tackle alone during the Great Depression, so a group of construction firms banded together and, using the name Six Companies, submitted a winning bid of $48.8 million for the project (at the time, it was the largest contract awarded by the federal government).

Why is the Hoover Dam named after the 31st President?

Hoover Dam is named for Mr. Herbert Hoover, the Nation's 31st president. When construction of the dam was initiated, on September 30, 1930, Secretary of the Interior Ray Lyman Wilbur ordered that the dam to be built in the Black Canyon of the Colorado as part of the Boulder Canyon Project Act be called "Hoover Dam".

How did the construction of public works projects like the Hoover Dam and other projects help the United States?

Economic Stimulus

During the Great Depression, jobs were scarce, and many people lived in poverty. The Hoover Dam was one of several large infrastructure projects designed to stimulate the economy and provide jobs.

How was the construction of the Hoover Dam?

The dam was built in vertical columns of blocks that varied in size from about 60 feet square at the upstream face of the dam to about 25 feet square at the downstream face. An estimated 215 blocks make up the dam.

What was the weather like during the construction of the Hoover Dam?

The site of Hoover Dam endures extremely hot weather, and the summer of 1931 was especially torrid, with the daytime high averaging 119.9 °F (48.8 °C). Sixteen workers and other riverbank residents died of heat prostration between June 25 and July 26, 1931.

What were the effects of building Hoover Dam?

But the dam also caused environmental concerns. In particular, it changed the Colorado River's course, affecting fish habitats, sediment structures, water quality, and the capacity of the initial floodplains.

Why was construction of the Hoover Dam so significant?
It protects southern California and Arizona from the disastrous floods for which the Colorado had been famous. It provides water to irrigate farm fields. It supplies water and power to Los Angeles and other rapidly growing cities in the Southwest.

What was the hardest part of building the Hoover Dam?

During the dam's construction, the job of the high scaler was by far the most dangerous, as well as the most dramatic.

Who funded the Hoover Dam project?

The Boulder Canyon Project Act was passed by Congress in 1928 and the dam begun in 1931 with funds from the Reconstruction Finance Corporation established by President Herbert Hoover. The dam was completed with New Deal funds from the Public Works Administration in 1935.

Who are the engineers that constructed the Hoover Dam?

Walker Young helped design the dam and is on hand to see that it rises exactly according to specifications. But the man who is actually building it, probably the best man for the job in the world, is Frank T. Crowe.

What act led to the construction of the Hoover Dam?

This act authorized the construction of the Hoover Dam on the Colorado River and the All-American Canal to the Imperial Valley in California.

Who were the men who worked on the Hoover Dam?

Workers identified by Berry Greenwood: Frank Chamberlain, George Dodson, Andy Shankie, David Varner, Guy Mathis, Lloyd Urmson, Lee Maxwell, Ben Ferguson, Robert Young, Mike Slattery, James Burns, Lawrence Wortley, Herbert Measley, Willard Smith, C. C.

When was construction on the hoover dam built

It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt. Its 

When did the hoover dam start construction

How many years did it take to complete the Hoover Dam project?

Five years

How long did it take to build the dam, powerplant, and appurtenant works? Five years. The contractors were allowed seven years from April 20, 1931, but concrete placement in the dam was completed May 29, 1935, and all features were completed by March 1, 1936.

Why was the construction of the Hoover Dam in the early 1900s most important for the development of the American West?

Most important, the dam enabled the West to continue its incredible growth, spawning some of the biggest farms and cities in America, such as Las Vegas and Los Angeles. The dam remains in operation to this day, providing water and electricity to the same communities.

When was Hoover Dam Bypass completed?

2010

The bridge was completed in 2010 and the entire bypass route opened to vehicle traffic on October 19, 2010. The Hoover Dam Bypass project was completed within budget at a cost of $240 million; the bridge portion cost $114 million.

During what years was Hoover Dam built?

Hoover Dam, formerly called Boulder Dam, dam in Black Canyon on the Colorado River, at the Arizona-Nevada border, U.S. Constructed between 1930 and 1936, it is the highest concrete arch-gravity dam in the United States.

When was the Hoover Dam built and why?

The dam was ultimately constructed to divert water from the Colorado River and turn it into electricity. Although construction for the dam began in 1931, plans for the Hoover Dam started before that time. The US Bureau of Reclamation devised the dam.

When was construction on the Hoover Dam completed?

How long did it take to build the dam, powerplant, and appurtenant works? Five years. The contractors were allowed seven years from April 20, 1931, but concrete placement in the dam was completed May 29, 1935, and all features were completed by March 1, 1936.

What dam was completed in 1936?

The Hoover Dam

The Hoover Dam is one of the most impactful engineering feats in American history. Completed on March 1, 1936, the dam spent nearly a century harnessing the mighty Colorado River and transforming parts of the arid Southwest into fertile farmlands and bustling city centers.

When was the dam created?

3,000 BCE

The World's First Dam

The first known dam to be built is the Jawa Dam, which is actually the largest in a series of dams that are all part of one reservoir system. Located in modern-day Jordan, the Jawa Dam was originally constructed around 3,000 BCE in what was then Mesopotamia.

How many years ahead of schedule was the dam completed?

Work actually began during the summer and continued around the clock until the dam was completed in 1935, two years ahead of schedule. By this time, Franklin D. Roosevelt, a Democrat, had been elected president.

On what river was the Hoover Dam built?

The Colorado River

Hoover Dam and Lake Mead, spanning the Arizona-Nevada state line, are located in the Black Canyon of the Colorado River about 35 miles southeast of Las Vegas, Nevada. It is a concrete thick-arch structure, 726.4 feet high and 1,244 feet long.

What river is blocked by the Hoover Dam?

The Colorado River

The Colorado River is more than 1,400 miles long and supplies water to Los Angeles, San Diego, and Phoenix. Las Vegas gets almost all its water from Lake Mead. Lake Mead was made by Hoover Dam when it blocked the Colorado River and flooded the Mojave Desert.

What was flooded when the Hoover Dam was built?

In 1935, the Nevada town of St. Thomas, which included the Gentry Hotel, began to slowly disappear under the rising waters of Lake Mead after the construction of the Hoover Dam.

Which river is damaged by the Hoover Dam?

The Colorado River

In the early 21st century, almost a million visitors a year still come to see the great dam on the Colorado River. Hoover Dam is 1,244 feet long at the top. It is 726 feet high from the lowest point of the foundation to the crest.

Was the Hoover Dam built during the Great Depression? Built during the Great Depression, the dam would tame the flood-prone Colorado River southeast of Las Vegas―protecting cities and farms, generating cheap electricity to supply power to homes and industry, and providing work for thousands who desperately needed jobs.

Who proposed building the Hoover Dam?

Upon becoming Secretary of Commerce in 1921, Hoover proposed the construction of a dam on the Colorado River. In addition to flood control and irrigation, it would provide a dependable supply of water for Los Angeles and Southern California.

Who pays for the construction of the Hoover Dam?

It would also provide a dependable supply of water for Los Angeles and other Southern California communities. As envisioned by Secretary Hoover, the project would be self-supporting, financed entirely through the sale of hydroelectric power generated at the dam.

How many men were hired to build the Hoover Dam?

21,000 men

How many men were employed during the dam's construction? A total of 21,000 men worked on the dam with an average of 3,500 and a maximum of 5,218 daily, which occurred in June 1934. The average monthly payroll was $500,000.

Who was the engineer that built the Hoover Dam?

Frank T. Crowe

Walker Young helped design the dam and is on hand to see that it rises exactly according to specifications. But the man who is actually building it, probably the best man for the job in the world, is Frank T. Crowe.

Who is in charge of the Hoover Dam?

Bureau of Reclamation's Lower Colorado Dams Office

The Bureau of Reclamation's Lower Colorado Dams Office manages, operates and maintains Hoover, Davis and Parker Dams and their associated powerplants and facilities on the lower Colorado River.

Is Hoover Dam government owned?

Nevertheless, Six Companies turned the dam over to the federal government on March 1, 1936, more than two years ahead of schedule. Hoover Dam impounds Lake Mead, the largest reservoir in the United States by volume when full.

What led to the construction of the Hoover Dam? Upon becoming Secretary of Commerce in 1921, Hoover proposed the construction of a dam on the Colorado River. In addition to flood control and irrigation, it would provide a dependable supply of water for Los Angeles and Southern California.

What happened in the Hoover Dam? Equipment failure caused a transformer at the Hoover Dam to explode, causing a fire that lasted about a half-hour and sending plumes of black smoke swirling through the air.

  • What problems were encountered while constructing the Hoover Dam?
    • In the rush to meet their deadline, Six Companies often sacrificed safety for speed. Working seven days a week, dam workers were exposed to all manner of dangers: carbon monoxide poisoning, dehydration, heat prostration, and electrocution from carelessly placed electrical lines.

  • What happened before the Hoover Dam was built?
    • About 25 years before the Hoover Dam's construction got underway, the Colorado River experienced significant flooding that damaged and destroyed many of the canals. The flooding extended to a large area called the Salton Sea, which was previously dry.

  • When was the construction of hoover dam completed
    • Appropriations were approved and construction began in 1930. The dam was dedicated in 1935 and the hydroelectric generators went online in 1937. In 1947, 

  • Who initiated the construction of Hoover Dam?
    • Herbert Hoover had visited the Lower Colorado region in the years before World War and was familiar with its problems and the potential for development. Upon becoming Secretary of Commerce in 1921, Hoover proposed the construction of a dam on the Colorado River.

  • Who oversaw the building of the Hoover Dam?
    • The actual construction of the dam took place between 1931 to 1936 – right in the midst of the Great Depression. It was overseen by Chief Engineer Frank Crow.

  • Who authorized construction of Boulder Dam?
    • Mr. Hoover

      The Boulder Canyon Project Act, enacted December 21, 1928, when Mr. Hoover was President-elect, ratified the compact and authorized construction of a dam in Black Canyon or Boulder Canyon, leaving to the Secretary of the Interior the choice of sites.

  • Who approved construction of the Hoover Dam?
    • President Calvin Coolidge

      The Boulder Canyon Project Act, introduced by Senator Hiram Johnson and Representative Phil Swing, both of California, passes in the House and Senate, and is signed by President Calvin Coolidge. Herbert Hoover takes charge of negotiations as six of seven basin states approve the Colorado River Compact.

  • What Boulder Dam project won congressional approval in 1928?
    • The Boulder Canyon Project Act of 1928 authorized construction of a dam in Boulder, or Black, Canyon, construction of the All-American Canal to connect the Imperial and Coachella Valleys with the Colorado River, and divided the lower basin waters among the lower basin states.

  • What was the main reason the Boulder Dam was built?
    • Since about 1900, the Black Canyon and nearby Boulder Canyon had been investigated for their potential to support a dam that would control floods, provide irrigation water and produce hydroelectric power. In 1928, Congress authorized the project.

  • Which president initiated the building of Boulder Dam?
    • The bill passed on December 18, 1928 and President Herbert Hoover signed a proclamation on June 25, 1929 making the Compact effective. Appropriations were approved and construction began in 1930. The dam was dedicated in 1935 and the hydroelectric generators went online in 1937.

  • When did construction start on the hoover dam
    • Nov 24, 2009 — On July 7, 1930, construction of the Hoover Dam begins. Over the next five years, a total of 21,000 men would work ceaselessly to produce 

  • Is the cement in the Hoover Dam still curing?
    • TIL that even after 78 years, the cement in the Hoover Dam is still curing. As far as I know, concrete curing is a reaction that could potentially be occurring for thousands of years. The more it cures, the slower it cures, meaning it might never finish curing, it would just approach an extremely slow rate.

  • Who ordered the Hoover Dam?
    • It should have been easy enough: in September of 1930, as Secretary of the Interior Ray Lyman Wilbur formally initiated construction on a major Colorado River dam, he proclaimed the following: “I have the honor to name this dam after a great engineer, who really started this greatest project of all time—the Hoover Dam!

  • Who financed building Hoover Dam?
    • It would also provide a dependable supply of water for Los Angeles and other Southern California communities. As envisioned by Secretary Hoover, the project would be self-supporting, financed entirely through the sale of hydroelectric power generated at the dam.

  • Who was the main engineer and builder of the Hoover Dam?
    • Frank T. Crowe

      Walker Young helped design the dam and is on hand to see that it rises exactly according to specifications. But the man who is actually building it, probably the best man for the job in the world, is Frank T. Crowe.

  • When did Hoover Dam start construction?
    • 1930

      The bill passed on December 18, 1928 and President Herbert Hoover signed a proclamation on June 25, 1929 making the Compact effective. Appropriations were approved and construction began in 1930. The dam was dedicated in 1935 and the hydroelectric generators went online in 1937.

  • Why did the government build the Hoover Dam?
    • Upon becoming Secretary of Commerce in 1921, Hoover proposed the construction of a dam on the Colorado River. In addition to flood control and irrigation, it would provide a dependable supply of water for Los Angeles and Southern California.

  • Was the Hoover Dam a government project?
    • In 1928, Congress authorized the project. The winning bid to build the dam was submitted by a consortium named Six Companies, Inc., which began construction of the dam in early 1931. Such a large concrete structure had never been built before, and some of the techniques were unproven.

  • How much were Hoover Dam workers paid?
    • The lowest wage was 50 cents an hour, and the highest was $1.25. The average for all of the workers at the dam was about 62.5 cents an hour.

  • How many construction workers worked on the Hoover Dam?
    • Rising more than 700 feet above the raging waters of the Colorado River, Hoover Dam was called one of the greatest engineering works in history. 5,000 working men and their families came to live in the Nevada desert, all in search of a paycheck.

  • How long did it take for the Hoover Dam to cure?
    • The Hoover Dam concrete would cure in 125 years by conventional or natural methods. Crews, however, used some innovative engineering methods to hasten the process. Nearly 600 miles of steel pipes woven through the concrete blocks significantly reduced the chemical heat from the setting for the concrete.

  • Who helped build the Hoover Dam?
    • Although construction for the dam began in 1931, plans for the Hoover Dam started before that time. The US Bureau of Reclamation devised the dam. The Bureau of Reclamation created plans for the dam's construction to make it one of the largest and most complex structures of its time upon completion.

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