Channel binding

Does anyone know what channel binding is?  The person who asked me the
question described it as a commercial binding technique that uses
pressurization and a steel bar. I haven't heard of it.  (By the way, the
questioner is Nanci Young of Princeton's Archives)

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                  Conservation DistList Instance 5:26
                 Distributed: Sunday, November 3, 1991
                        Message Id: cdl-5-26-003
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