Advances in Fine and Ultrafine Particles Emission and Dispersion in Machining: cases of metals and granite

Machining is necessary to shape parts but it is also an important source of pollution (such as dust and aerosols) and this constitutes hazards for machine-tools operators. The emission of dust and the overall shop floor air quality are of great concern when shaping dusty materials such as granite (containing silica) but also composites and metals. In recent times, occupational health and safety regulations have become more severe. To quickly comply with new regulations, engineers and researchers must help industries in developing strategies to limit workers risk of exposure to these hazards. This article review progress on research works conducted on fine and ultrafine particle emission during the machining and polishing of granite and metals. The focus is on occupational health and safety (OHS) aspects but also on the effects of machining conditions on machining shop floor air quality and means of reducing at the sources of these hazards without negatively influencing the productivity of the machining process.