Construction of the Hoover Dam

Where is the Hoover Dam?

It is likely that the dam had to be constructed on solid bedrock so that

Choose the correct answer.

What is a canyon?

Workers cleared mud from the riverbed and removed loose rock from the canyon walls to

From the passage, one can conclude that working conditions at the dam site were probably

The Hoover Dam was the

One can conclude from the passage that muckers, puddlers, and high scalers were types of

The Hoover Dam has allowed people to harness the power of

When concrete was poured, cold water was run through the blocks to

A synonym for the word debris is

In the context of this passage, what does "divert" mean?

The first step in the construction of the Hoover Dam was

An ideal site for a curved gravity dam such as the Hoover Dam is probably a