I am having trouble finding information about the toxicity of dust from
shell and coral. It is well known among people who work shell that
abalone and black coral are particularly toxic, but all the references I
have seen refer to shell as calcium carbonate, and give it a fairly benign
rating.
I suspect that most of the problem comes from proteins in the shell
matrix. But several people have mentioned that the abalone contains
arsenic. Others say that the shell can also contain a high percntage of
silica.
Does anybody have any research data on dust from shell and coral?
Thanks,
Curt
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