Stephane Groueff brilliantly portrays the egotistical General Groves The book gives a step by step account of the way Groves collected the best scientists and industrialists in the whole of America It goes into great detail into how they devised ways of refining Uranium for use in the first bomb, and the massive cost of building the neccesary processes needed to do this, and how scientists had to convert laboratory experiments which produced millionths of a gramme of product into a process that would produce tons!