36. Mist (airborne droplets or aerosols) is generated when metal-removing fluids are used in machining operations to cool and lubricate the tool and workpiece. Mist generation is a concern to OSHA, which has recently lowered substantially the workplace standard. The article “Variables Affecting Mist Generaton from Metal Removal Fluids”

(Lubrication Engr., 2002: 10–17) gave the accompanying data on x
fluid flow velocity for a 5% soluble oil

(cm/sec) and y
the extent of mist droplets having diameters smaller than 10 m (mg/m3

):