http://directory.mesothelioma.pl just started. Only sites on the topic, no other things. Free submissions - just reciprocal. If somebody has site/blog on the topic may be another place to listed. Also there is part to just sing article on mesothelioma on yur personal page not fully connected to the topic etc.
i added section for all directories because most of them has 'health' section so it will let more people get listed. aka almost everybody with a directory.
Strange you should bring this up "asbestos" I am working on a consultants site myself www.web-consultant-seo.com fancy discusing various things?