Abstract
Abstract “Mineral fibres” are included on the List of Priority Substances to be assessed under the Canadian Environmental Protection Act. This assessment addresses several categories of man‐made vitreous fibres for which the databases were considered to be sufficient to permit assessment. On the basis of the excess in respiratory and lung cancer observed among production workers in epidemiological studies conducted to date, rock/slag wool is considered “possibly carcinogenic to humans”. Adverse effects of exposure to rock wool (only) have been observed in toxicological studies in animal species only at concentrations much greater (by more than 350 times) than the highest concentrations measured in the indoor environment in living areas during the installation of blown rock wool insulation. On the basis of the lack of observed excesses of cancer in glass wool production workers in the most extensive epidemiological studies conducted to date, and the lack of observation of significant increases in tumour in...
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