Canada, Bruce Nuclear Power Development, at Douglas Point, Ontario. Nuclear Reactor. Installation of the reactor and fittings. Note size of reactor, comparing with two workmen standing. Fuel bundles will eventually be inserted in the 480 tubes of this reactor. This is the reactor of Unit 2, plant B . It is a CANDU reactor manufactured in Canada, the fuel to be used, Natural Uranium (UO2), is also of Canadian origin. Photo circa 1970-1980.