In article ,
"William Wixon" wrote:

"Joseph Gwinn" wrote in message
...



I wish to report that the earth's core is made of almost pure
nickel-iron alloy, so the supply of iron from which to make our iron
toys is assured. All we have to do is to dig a thousand miles straight
down.

"new" theory there's a natural atomic reactor at the center of the
nickel-iron core.

http://nuclearplanet.com/
http://sfgate.com/cgi-bin/article.cg...GPIA17BL45.DTL

It's an interesting theory. I haven't seen it in Science or Nature yet.
I don't doubt that it's controversial - almost everything significant in
Earth Science starts out that way. It will probably take at least ten
years to confirm or refute,

Joe Gwinn