The Windsor Site of the Knolls Atomic Power Lab trained over 14,000 Naval operators on the S1C Prototype Reactor at the Nuclear Propulsion Training Unit (NPTU).
Military - Training, Demolished
Its operations contaminated soils, buildings and equipment surfaces with uranium and other radioactive materia. In 2006 full remediation of the site was completed.
The aerial views show the site after buildings and soil were removed.
Links: www.globalsecurity.org, virtualglobetrotting.com, clui.org, en.wikipedia.org, coldwar-ct.com