For large scale production: Hanford Site, USA.
Plutonium was discovered by Glenn T. Seaborg Edwin M. McMillan, Joseph W. Kennedy, and Arthur C. Wahl at the Berkeley Laboratory of the University of California (United States) after the bombardment of uranium with deuterons. Now plutonuim is obtained in the nuclear reactors. Plutonium is also in traces in uranium minerals. For large scale production: Hanford Site, USA.
Plutonium was discovered at Berkeley, USA in December 1940.
The first use of plutonium was as nuclear weapon; United States was the first country to use these weapons against Japan.
Initially reactors were built to produce plutonium for weapons, then for warships (submarines first). After that it seemed sensible to use them for electricity as well
Plutonium was used in the Trinity test, Uranium in the first combat weapon.
Neptunium and plutonium were discovered in United States in 1940.
Plutonium was prepared for the first time in Berkeley, USA at 14.12.1940.
Hanford in Washington state was chosen for its remote location and because it has a good water source. Folks in some small communities had to be relocated but things worked out, and the first plutonium for the second atomic bomb was produced there.
14 December 1940 was the day accepted for the first preparation of the isotope plutonium-238.
The first pacemaker with plutonium 238 was implanted in Paris (France) in 1970, as a collaboration between Medtronic (USA) and Alcatel (France).
Cromford mill was the worlds first factory
The first nuclear reaction used to obtain plutonium:238U + n-------239U-------239Np + e--------239Pu + e