Hi Doris,
I answered your question earlier, but I'm not sure what happened to it. Micarta is a form of asbestos which is known for causing Mesothelioma. There are a lot of lawesuits behind it, and I suspect may be why your doctor mentioned it.
Here's a link on a current lawsuit, includings asbestos micarta
http://www.yourlawyer.com/newsletter/read/55
I hope this was helpful, and please let me know if you have any further questions.
Lisa
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