Even prior to that in the 1960s the US invented Molten Salt Thorium nuclear reactors at Oak Ridge. They were shelved not because of the abundant supply of Uran

Even prior to that in the 1960s the US invented Molten Salt Thorium nuclear reactors at Oak Ridge. They were shelved not because of the abundant supply of Uranium, but rather because they could not be used to make weapons. http://energyfromthorium.com/history.html http://energyfromthorium.com/history.html