Faced with this crushing uncertainty, the U.S. government approached the problem methodically. In the spring of 1955, they nuked the heck out of some filing cabinets.

One unlucky filing cabinet. (GZ = “Ground Zero”)
Faced with this crushing uncertainty, the U.S. government approached the problem methodically. In the spring of 1955, they nuked the heck out of some filing cabinets.
One unlucky filing cabinet. (GZ = “Ground Zero”)
Since the implosion concept was first declassified in 1951 as part of the Rosenberg trial,1 there has been a steady stream of information about the “Fat Man” and “Trinity” bomb designs. The most detailed ones on offer today come from Carey Sublette and John Coster-Mullen, two nuclear weapons design speculators who’ve pinned down a relentlessly detailed, fine-grained vision of what those two nearly-identical weapons were supposed to be:
And yet, after all this time, is there still more to know? More details? How wonkish can you get? Here’s my play for bomb-secret-speculator immortality: there was a very specific, small difference between the cores of the Trinity “gadget” and the “Fat Man” devices. (And the crowd goes, oooo.)
But I digress a bit. Today’s set of images is a grouping of self-documentation that I find fascinating. In the late summer of 1945, a group of scientists and technicians from Los Alamos went to the island of Tinian to prepare for the dropping of the atomic bombs on Japan. The first atomic bombs were big, clunky, ad hoc engineering creations and took a lot of work to put together, so the level of scientific talent was pretty high. Just to illustrate this, it’s worth noting that one of the people who assembled the final bombs was Luis Alvarez, who would later win a Nobel Prize in Physics:
The scientists heavily documented the Tinian mission. John Coster-Mullen has used a lot of these now-declassified photos to pretty extreme ends in figuring out exactly what they were doing in assembling these bombs. But my favorite set of photos are these ones the Tinian scientists took of themselves in front of Quonset hut with a funny little box in their hands:1
On the case was one of my favorite characters of the Manhattan Project, William A. Shurcliff, who pops up all over the place in the archival record of the atomic bomb, despite being obscure even to scholars of the bomb.
A painting of William A. Shurcliff from 1948 by his father-in-law, the American artist Charles Hopkinson.
Shurcliff was a physicist with three Harvard degree (B.A., Ph.D., business admin.) who worked across the hall from Vannevar Bush at the Office of Scientific Research and Development. He was involved in the OSRD’s Liaison Office (shuffling reports from one division of the OSRD to another), worked as a patent censor for the Manhattan Project,1 was an assistant to Richard Tolman (who was himself an assistant to General Groves), was a copyeditor of the Smyth Report,2 and in 1946 he would be the “official historian” for the Operations Crossroads tests, of all things. So he’s all over the place, but always just on the periphery.
What really distinguished Shurcliff, though, was his propensity to write lots of little, unsolicited memos to Bush and Tolman on ideas that came to mind. These included speculations on the future uses of atomic energy, his analysis of arguments for and against secrecy, and, to bring it around again, a suggested “fission vocabulary” for the atomic age.3
Or, to put it another way, our subject is a “real” person. As T.H. White put in The Once and Future King:
One explanation of Guenever, for what it is worth, is that she was what they used to call a “real” person. She was not the kind who can be fitted away safely under some label or other, as “loyal” or “disloyal” or “self-sacrificing” or “jealous.” Sometimes she was loyal and sometimes she was disloyal. She behaved like herself. And there must have been something in this self, some sincerity of heart, or she would not have held two people like Arthur and Lancelot. Like likes like, they say — and at least they are certain that her men were generous. She must have been generous too. It is difficult to write about a real person.
When I read the above paragraph (not too long ago), I thought, yes, it is difficult to write about a real person. That’s exactly the problem with someone like Oppenheimer.
Here’s one of my favorite examples of this, which I’ve never seen printed anywhere.