Continuing the operation
Before anyone has completed the draining of the American Falls, the discovery on the riverbed was a strong reminder of the deadly force of the falling water. Authorities have removed the remains from the riverbed in order to move the operation forward. Then, they removed loose rocks from the front of the waterfall.
To do this, workers were locked in cages attached to cranes. They were dragged along the edges of the falls like this. At the same time, engineers installed a sprinkler system designed to continuously moisten a layer on the surface of the waterfall. According to experts, the rock had dried out, making it more vulnerable to erosion.