Operational Report R@neer Section Introduction This report of engineer operations covers a period of six months ha 3 October 1947 to 3 April 194S. During this interval of time, all necessary steps were taken to plan, mobilize, equip, transport and supply a small but complex work- force which bnumt to successful completion the constructionof an atomic energy proving ground on l!hiwetokAtoll. No attempt is 8nde either to accentuate or tzinlmizethe problems encountered. It is sufficientto say that, though many appeared formidable at the time, in retrospect none proved to be real. There follows In brief outline the record of engineer operations. It covers the organization,planning zmbilizationand construction phaees of these operation, and includes sufficient statisticaldata to define accurately the scope and nature of the work. 1. Seetion XVI ., -1-.,