Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!elroy.jpl.nasa.gov!swrinde!mips!apple!portal!cup.portal.com!mmm From: mmm@cup.portal.com (Mark Robert Thorson) Newsgroups: comp.arch Subject: Re: How do you make poly-silicon ingots? Message-ID: <42025@cup.portal.com> Date: 5 May 91 23:34:27 GMT References: <28232589.ea5@petunia.CalPoly.EDU> Distribution: ca Organization: The Portal System (TM) Lines: 4 That posting reminds me of something else. Where exactly does semiconductor silicon come from? I vaguely remembering hearing that the starting material comes from someplace weird, like it's a by-product of the Bessemer converter process for making steel or something.