The Hole idea starfted in the Truman adn. Construction began During 1952 Ikes adm.
The Corps of Engrs was in charge of THe whole thing. From the water supply for it to the Exhaust holes for Boiler and Generators. All things being reduntant? ie 2 power plants 2 or more of every thing.
I am talking about Site R The first of the underground facilities. THe Gran,daddy of them all.Upgrades lead to steel frame buildings mounted on springs!
THe Engrs drilled holes 36 " in Dia. of the exhaust pipes thru green stone before they knew how to steer the bit. When it drifted off after 600' they built a chandeller with 4 lights (compass poits to measure the drift) and calculated what they needed to do to find the bottom of the hole inside! Gave the miners a corrected heading and said 12 more feet in that direction and you gaot it. And they were corredt! NO job Too big for an Engr.more to follow...