Early Days

The first decades at Chalk River and Deep River

Chalk River Nuclear Laboratories arose out of a 1942 collaboration between British and Canadian nuclear researchers which saw the Montreal Laboratory established under the National Research Council. By 1944,  the Chalk River facility was opened and, in September 1945, it saw the first nuclear reactor outside of the United States, ZEEP, become operational. 

See The Early History of Deep River and “the Plant”

The construction of Deep River began in 1944 to accommodate employees of the nearby Chalk River Nuclear Laboratories.

Most Chalk River staff lived in Deep River and Pembroke, about 20 minutes and 45 minutes away by road respectively.

Computers have played a crucial role within the nuclear industry for theoretical and design calculations, data acquisition and handling and control systems.