<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial, helvetica, sans-serif;font-size:12pt"><DIV>Given the likehood of Uranus and Neptune having rocky metal cores about an Earth mass or so, this still means most of the rock and metal in the solar system is off Earth, no? Of course, it'd be really hard to access much of it, but the same applies to the rock and metal not in Earth's crust. (And, once you're off world, it seems like the rock and metal available on Luna and smaller bodies would be far more accessible and useable than the stuff packed into the Earth or any terrestrial planet.)</DIV>
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<DIV>I just don't see, at this time, such a shortage of these materials, that the only possible attitude to take is Earth must be gobbled up for resource extraction.</DIV>
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<DIV>Regards,</DIV>
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<DIV>Dan</DIV>
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<DIV style="FONT-SIZE: 10pt; FONT-FAMILY: arial, helvetica, sans-serif"><FONT face=Tahoma size=2><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Eugen Leitl <eugen@leitl.org><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> extropy-chat@lists.extropy.org<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wed, April 6, 2011 11:30:09 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [ExI] Millions of tons to space<BR></FONT><BR>On Wed, Apr 06, 2011 at 07:52:34AM -0700, Dan wrote:<BR>> You speak as if Earth contained most of the rock and metal in the solar system <BR>> if not the galaxy. There's plenty of rock and metal around to play with.<BR><BR>Most of the metals in the solar system are locked in the inner<BR>planets. There are 4 MT/s of flux to work with, and more if you<BR>use fusables for fuel.<BR><BR>-- <BR>Eugen* Leitl <a href="http://leitl.org">leitl</a> <A href="http://leitl.org/"
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