<div dir="ltr"><div dir="ltr"><div>On Sun, Sep 6, 2026 at 4:34 AM John Clark <<a href="mailto:johnkclark@gmail.com">johnkclark@gmail.com</a>> wrote:</div></div><div class="gmail_quote gmail_quote_container"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div style="font-family:arial,helvetica,sans-serif"><span style="font-family:Arial,Helvetica,sans-serif;background-color:transparent">On Sat, Sep 5, 2026 at 9:08 PM Keith Henson <<a href="mailto:hkeithhenson@gmail.com" target="_blank">hkeithhenson@gmail.com</a>> wrote:</span></div></div><div class="gmail_quote"><div dir="ltr" class="gmail_attr"><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div><span style="background-color:transparent"><font size="4" face="tahoma, sans-serif"><i><span class="gmail_default" style="font-family:arial,helvetica,sans-serif">> </span>why they bother with U-235. There is an easy way to make pure Pu-239 that I made public 20 years ago.</i></font></span></div></div></div></blockquote><div><br></div><font size="4" face="tahoma, sans-serif"><b>If I remember correctly, and please correct me if I'm wrong,</b></font></div></div></blockquote><div><br></div><div><div style="font-size:small" class="gmail_default">Wrong, my proposed method was to replace a control rod in a power reactor with a loop of U--238 solution and sort out the plutonium as it is formed. This keeps Pu-239 from picking up another neutron to become 240. That's probably enough for bad guys to work out the rest, though I go into considerable detail in "Bad Days/"<br></div><br></div><div style="font-size:small" class="gmail_default">Keith</div><div style="font-size:small" class="gmail_default"><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><font size="4" face="tahoma, sans-serif"><b>your method was similar to <span class="gmail_default" style="font-family:arial,helvetica,sans-serif">a</span> Liquid Fluoride Thorium Reactor (LFTR) that has been proposed for producing electrical power, except that instead of dissolving common thorium in a molten salt you propose<span class="gmail_default" style="font-family:arial,helvetica,sans-serif">d</span> dissolving uranium 238. I think LFTR would be a good way to produce electrical energy<span class="gmail_default" style="font-family:arial,helvetica,sans-serif">,</span> although it would probably take a few hundred million dollars of research and development to iron out the bugs, your method might also be good .... If you wanna make a bomb.</b></font></div><div class="gmail_quote"><font size="4" face="tahoma, sans-serif"><b><br></b></font></div><font size="4" face="tahoma, sans-serif"><b>I think the principal reason Iran went for uranium instead of plutonium is because uranium enrichment factories are relatively common, that's because <span class="gmail_default">for </span>civilian nuclear power reactors (except for those that use heavy water as a coolant<span class="gmail_default"></span>) the U-235 fuel needs to be enriched from the naturally occurring zero 0.7% to 3.5 to 5%. So Iran can claim they're only separating uranium for peaceful purposes, everybody knows it's a bullshit claim but for some countries it was useful to pretend that they believed <span class="gmail_default">them</span>. </b></font><div><font size="4" face="tahoma, sans-serif"><b><br></b></font></div><div><font size="4" face="tahoma, sans-serif"><b>The Iranians could have built a heavy water reactor of the type used in Canada and almost nowhere else, but it would be very hard to hide a large nuclear reactor; and it would be even harder to hide a chemical plant capable of separating plutonium. And plutonium in enrichment factories are much rarer than uranium enrichment factories and thus would be much more suspicious, and they are too big and dirty to hide.</b></font><br><div><div><font size="4" face="tahoma, sans-serif"><b><br></b></font></div><div><font size="4" face="tahoma, sans-serif"><b><span class="gmail_default">John K Clark</span></b></font></div></div></div></div>
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