Displaying iron cannon

What is the preferred method of displaying iron cannon outdoors
today?  I have been asked to look at a few cannons here locally
displayed.  Concrete plugs installed in the barrels of two 18th
Century iron cannons are obviously not working and allowing water to
get into the barrels.  What materials are being used to seal the
barrels for display?

Jason Burns
Director of Conservation
Lighthouse Archaeological Maritime Program
St. Augustine, Florida


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                  Conservation DistList Instance 16:23
               Distributed: Wednesday, September 25, 2002
                       Message Id: cdl-16-23-025
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