Before the end of the war in August 1945, the HEW built 554 buildings at Hanford, including three nuclear reactors (105-B, 105-D, and 105-F) and three plutonium processing canyons (221-T, 221-B, and 221-U), each 250 meters (820 ft) long.
Sebelum akhir perang Agustus 1945, HEW membangun 554 bangunan di Hanford, termasuk tiga reaktor nuklir (105-B, 105-D, dan 105-F) dan tiga ngarai pengolahan plutonium (221-T, 221-B, Dan 221-U), masing-masing sepanjang 250 meter (820 kaki).