Harrison, P., Holmes, P., Bevan, R., et al. (2015). Regulatory Toxicology and Pharmacology, 73(1): 425-441.

A number of different organisations worldwide have assessed the health risk of synthetic mineral fibres (SMF) and established workplace exposure limits. This paper outlines the basic principles and methods used to derive valid occupational exposure limits (OELs) and goes on to show how, for SMF, and particularly for RCF/ASW, the methods used and the associated outcomes differ widely. It is argued that the resulting differences in established OELs prevent consistent and appropriate risk management of SMF worldwide, and that development of a transparent and harmonised approach to fibre risk assessment and limit-setting is required. The methods used in Germany, with their reliance on IP test results, are strongly criticised.