English: A report, classified Top Secret Restricted Data and obtain by FOIA in the 1990s, on US and Soviet nuclear weapon developments, including estimates of US and Soviet nuclear weapon design capabilities.

The last pages of the document include tables and graphs of US and Soviet yield to weight ratio capabilities by warhead weight class, survivability of Minuteman silos to attacks by various warhead yields, and a list of warhead yields for US and Soviet high altitude nuclear tests.

The final two pages document the actual and estimated warhead yields for various US and Soviet systems, grouped by 1958 and pre 1958 warhead developments, developments based on the most recent series of tests (Operations Dominic and Nougat for US weapons) and possible yields based on future nuclear weapon developments.

Note, that based on modern documents, the warhead weight estimates for Soviet weapons are gross overestimations of Soviet capability. For example, they estimate a 40 to 60 megatonnes of TNT (170 to 250 PJ) warhead like the Tsar bomb weighing 17,000 pounds (7,700 kg) when the tested weight of the device was 60,000 pounds (27,000 kg).