Very good comment from Northeast Document Center.  See also article in
current issue of Scientific American...
 
John Scott
New York Conservation Center
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On Wed, 14 Dec 1994, Northeast Document Center wrote:
 
> Most, if not all, the studies of CD permanence have come out of the
> industry, where "archival" may be defined as 5 years or less...
 
> The problem with CD as a long-term format is not so much the
> vulnerabilities of the physical object... as the speed of technology
> change...