Roofing materials Butyanol

In regards to Antarctic conservation research, can anyone tell me of
any research that has taken place on

    *   old rubberoid roofing materials

    *   butyanol, which I think, though could be wrong, is a bitumen
        based product.

Any help appreciated,

Lynn Campbell
Conservator
For the Antarctic Heritage Trust New Zealand

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                  Conservation DistList Instance 10:36
                Distributed: Saturday, October 12, 1996
                       Message Id: cdl-10-36-012
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