The report presents a very extensive analysis of evidence but seems to us to have jumped to precautionary conclusions e.g. that RCF could cause mesothelioma or lung cancer.
Evidence from:
CDC/ NIOSH May 2006-123
“Occupational Exposure to Refractory Ceramic Fibers”
Much is made of the formation of pleural plaques in those with high exposures to RCF. By analogy with asbestos.
Further detail: