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On 2016, Jan 26, , at 14:19, John Denker <jsd@av8n.com> wrote:According to Wiki trace amounts are found w/ U.
I wouldn't even split it. The title of the diagram is
"Where Your Elements Came From" and for all practical
purposes all of "my" technetium is man-made. Similar
words apply to neptunium and plutonium, contrary to
what is shown in the diagram.