Dear Meg.  I wish that I could be a reliable guide for you, but for
some years I have been "out of the loop"professionally. I trust that
you will get a response from some one who has current
information. I wonder whether you have checked the latest ACS
safety guide. I do not have a copy but that is where I would go for a
first look on possible answers to your question.

Good wishes for a successful search.

Yours sincerely,      Malcolm Renfrew

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