§ Mr. Mayhew
I am informed by the chairman of the Health and Safety Commission that, as practical guidance in complying with the Asbestos Regulations 1969 and the Health and Safety at Work, etc. Act 1974, occupational exposure to dust from all forms of asbestos should be reduced to the minimum reasonably practicable. In addition, in the case of white—chrysotile—asbestos, occupational exposure should never exceed 2 fibres/ml when measurements are averaged over a four-hour sampling period. Short-term occupational exposures should not exceed 12 fibres/ml when measured over any ten minute period.
In its final report the advisory committee on asbestos has recommended retention of the first criterion and a more stringent limit for the maximum occupational exposure to dust from white—chrysotile—asbestos of 1 fibre/ml—averaged over a four-hour sampling period—from 1 December 1980. The Health and Safety Commission has invited comments on this and other recommendations 534W in the advisory committee's final report and, when these have been assessed, will advise on appropriate future action.