What I know is that every job from that era was union ran & there was other outside pressure that scuddled the project. Everything has a back-up however early on in design & plan, usually as a just in case that people either don't or won't want to pay. If you go back to see which union actually got the job & how much they had to "kickback", you'll know exactly why it went that way. Don't worry, Johnny Katz is dead & Butchy is in prison. You need articles & near life experiences to think you have it down, only in your mind. Things go down when money is going to be paid, to the right people.
Just for the record, I'm not flaunting life experiences & education in a weak attempt to show some type of knowledge. I personally think it shows weakness & a self-fulfilling need for power. Real power is Delegated to those who have it, so i'd think before you post.