Demolition resumed Monday on the remaining Windsor buildings belonging to former Combustion Engineering, which once built industrial boilers and conducted nuclear research and training at the site at 2000 Day Hill Road.
Clearing of the 600-acre site for future development continues with the razing of the West Campus buildings is due for completion in January, authorities said.
Combustion Engineering in 1955 acquired the Windsor acreage and was later contracted by the then Atomic energy Commission to produce nuclear fuel for the Navy's prototype submarine reactor training facility.
Swiss-Swedish industrial firm Asea Brown Boveri (ABB Group) bought Combustion Engineering in 1990.
ABB recently donated photographs of the 55-year-old facility, site of the first sustained nuclear chain reaction in Connecticut, to the Windsor Historical Society.
According to the Windsor town manager's Aug. 2 report, ABB moved its offices and robotics division to 5 Waterside Crossing.
French industrial firm Alstom, which acquired ABB's Windsor power-generation equipment operation a few years ago, also has moved those to 200 Great Pond Road as well as to 175 Addison Road.
Town Manager ABB has partnered with Winstanley Enterprises to devise a long-range master plan for mixed-use redevelopment of the site.