SECTION 2

For the purpose of this Convention- (a) the term " asbestos " means the fibrous form of mineral silicates belonging to rock-forming minerals of the serpentine group, i.e. chrysotile (white asbestos), &¿ 6og/?/ £ enuc-<_ (T) and of the amphibole group, i.e. actinolite, amosite (brown asbestos, cummingtonite-grunerite), anthophyllite, crocidolite (blue asbestos), tremo- lite, or any mixture containing one or more of these ; (b) the term "asbestos dust" means airborne particles of asbestos or settled particles of asbestos which are liable to become airborne in the working environment ; (c) the term " airborne asbestos dust " means, for purposes of measurement, dust particles measured by gravimetric assessment or other equivalent method ; (d) the term " respirable asbestos fibres " means asbestos fibres having a diameter of less than 3 \im and a length-to-diameter ratio greater than 3:1. Only fibres of a length greater than 5 (xm shall be taken into account for purposes of measurement ; (e) the term "exposure to asbestos" means exposure at work to airborne respirable asbestos fibres or asbestos dust, whether originating from asbestos or from minerals, materials or products containing asbestos ; (f) the term "workers" includes the members of production co-operatives; (g) the term "workers' representatives" means the workers' representatives recognised as such by national law or practice, in conformity with the Workers' Representatives Convention, 1971.