Xref: utzoo sci.astro:13835 sci.space:31761 Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!think.com!snorkelwacker.mit.edu!world!webber From: webber@world.std.com (Robert D Webber) Newsgroups: sci.astro,sci.space Subject: Re: Platinum-group metal concentrations in earth-crossing objects Keywords: gold Message-ID: <1991Jun16.003812.11369@world.std.com> Date: 16 Jun 91 00:38:12 GMT References: <5248@dirac.physics.purdue.edu> <1991Jun12.073415.12543@sequent.com> <1991Jun16.000359.10311@world.std.com> Organization: The World @ Software Tool & Die Lines: 8 After I posted an article to this group regarding some errors in and difficulties not mentioned in one of Nick Szabo's postings on extracting platinides and other materials from an asteroid, I came across the answer to my own question in another of his postings: the oxygen and water to be used in processing the metals will come from previously gathered ice chunks. To me this makes the scheme seem even less likely, or at least less predictable, since one has to assume that yet another whole range of technical problems have been overcome cheaply.