Relationship between the asbestos content of materials and the concentration of fibres in the ambient air during dismantling work Abstract The dismantling of asbestos-containing materials generates significant concentrations of fibres, generally in the workers’ breathing zones. The researchers’ objective was to document the sources of fibre emission into the air during specific tasks and how different variables contribute to it. Among other things, their report presents the results of analyses of material and air samples collected during dismantling work. The authors recommend that air sampling in the workers’ breathing zones be applied, as prescribed by the Safety Code for the construction industry and the Regulation respecting occupational health and safety. They specify that this sampling should be carried out during tasks likely to emit the most dust in order to be able to better determine worker exposure, and to ensure, as a result, that these workers benefit from the appropriate respiratory protection and effective means of control. Produced Under this Project Scientific Reports Relationship between the materials' asbestos content and the fibre concentration in the ambient air during dismantling work Research Report: R-600 Scientific Publications Relation entre la teneur en amiante dans les matériaux et la concentration de fibres dans l’air ambiant lors de travaux de démantèlement : résultats préliminairesDufresne A., Dion C., Drolet D., Perrault G., Viau S., Lemay F.Source : in Les démarches gagnantes : Colloque en hygiène du travail (2e : 22 mars, 2007 : Montréal, Canada), 2007Personal and static samples measurement of asbestos fibres during two abatement projectsDufresne A., Dion C., Frielaender A., Audet E., Perrault G.Source : Bulletin of Environmental Contamination and Toxicology, vol. 82, no 4, 2009, p. 440-443 Additional Information Type: Project Number: 0099-4340 Status: Completed Year of completion: 2009 Research Field: Chemical and Biological Hazard Prevention Team: Chantal Dion (IRSST)André Dufresne (Université McGill)Stéphanie Viau (IRSST)Daniel Drolet (IRSST)François Lemay (IRSST)Julie McCabe (IRSST)