Oppenheimer was the administrative genius behind the atom bomb. He was the one who founded the site where it was developed and brought in the scientists needed to complete the project. He oversaw every aspect of it. Read:http://www.americanthinker.com/articles/2015/02/jewish_scientists_helped_america_build_the_atom_bomb.html
If neither Oppenheimer nor Nobel had done the work on the inventing, someone else would have.