A new national park, including Hanford site, recognizes America’s first nuclear weapons

A new national park, with sites in Washington and two other states, will recognize and welcome visitors to three locales at which the United States undertook a crash program to develop nuclear weapons during World War II. The Manhattan Project National Historic Park includes the Hanford B Reactor, located on the Columbia River north of Richland, which manufactured plutonium used in two of the first three nuclear weapons explosions — the test explosion at Trinity site in New Mexico, and the