about a dozen workers died during the construction of what Depression Era structure?

Answer 1

The direct answer to your question is the Golden Gate Bridge with 11.

Just three months before opening day, a scaffold beneath the Golden Gate roadway broke loose, ripping through the net, plunging it into the water. Ten men on the scaffold fell to their deaths. A plaque at the San Francisco Tower honors their memory and that of another worker who had been killed earlier. In total 11 men died on the project.

Though rumors of hundreds of people dying on the work site circulated during the time of its construction, official records state that only five workers were killed: one worker was struck by a truck; a second fell down an elevator shaft; a third was hit by a hoist; a fourth was in a blast area; and a fifth fell off a scaffold.

Officially there were 96 deaths during the construction. contrary to popular belief, nobody is buried in the dam.

Answer 2

Golden Gate Bridge

Answer 3

The Empire State Building.

Answer 4

the Hoover Dam