“ Do you know where Plutonium is mined?”
Plutonium is not mined anywhere. In fact it’s not found in nature in anything but trace amounts.
Pu is created by controlled nuclear reaction.
This was the major push of the Manhattan Project.
Exactly right! The longest lived isotope of Plutonium is 80 million years. There may have been some on Earth in the beginning but it has long since decayed away did to the great length of time that has since past.