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From Indiana's FACET guide: Until World War II this wire was typically made of steel and susceptible to rust. Later, wire was made of a type of stainless steel—which is a stable and durable material— that was manufactured specifically for recording. Because non-stainless steel wires are susceptible to rust or corrosion, and because non-standard size and playback speed wires are not compatible with standard machines, these items are at greater risk. Non-stainless steel wires are rare but, if found, may exhibit corrosion that makes playback more difficult. Even stainless steel wires may be subject to some oxidation. http://www.dlib.indiana.edu/projects/sounddirections/facet/facet_formats.pdf Marcos On Wed, May 6, 2009 at 8:15 PM, Angie Dickinson Mickle <[log in to unmask]> wrote: > The reference was to the spools themselves, not the wire on the spools. > > Angie Dickinson Mickle > Avocado Productions > Broomfield, CO > www.avocadoproductions.com > 800-246-3811 > > > Dan Nelson wrote: >> >> Its been to many years since chemistry..but i believe you cannot >> magnetize aluminum..... so the wire must have some sort of coating that >> appears to be silver/aluminum in color. >> I have many spools of Webster and Silvertone/sears wire that look the >> same. The old Webster Chicago runs mechanically but the electronics need >> re-capping >>> ahh a job for later since i havent had any requests to >> transfer wire lately. >> dnw >> >> --- On Wed, 5/6/09, Angie Dickinson Mickle <[log in to unmask]> >> wrote: >> >>> From: Angie Dickinson Mickle <[log in to unmask]> >>> Subject: Re: [ARSCLIST] wire recordings - archival storage >>> To: [log in to unmask] >>> Date: Wednesday, May 6, 2009, 7:45 AM >> >> <snip> >>> >>> I have seen some spools that were bare aluminum (usually >>> with no label), but you are right most seem to be pot >>> metal. Pretty awful getting the wire off when the rims >>> have been broken. >>> >>> I will be paying more attention to these issues. And >>> if you uncover any more information, please let us know what >>> you find. >>> >>> Very cool that the plant is still there. It would be >>> fun to drive passed the next time I'm in town. >>> >>> >>> Angie Dickinson Mickle >>> Avocado Productions >>> Broomfield, CO >>> www.avocadoproductions.com >>> 800-246-3811 >>> >> >> >> >> __________ Information from ESET Smart Security, version of virus >> signature database 4057 (20090506) __________ >> >> The message was checked by ESET Smart Security. >> >> http://www.eset.com >> >> >> >> > -- Marcos Sueiro Bal Audio Engineer 718.902.7441