Martin Miller. 12" x 9". 193 b/w photos. The intellectual adventure of developing the atomic bomb at Los Alamos has been well documented, but the fact is that 90% of the Manhattan Project expenditures went to produce the exotic nuclear explosive materials required. That is the story told here, a story of the brilliant harnessing of American industry to build a coordinated network of huge production plants using technology that was being developed even as the plants themselves were rising.