A preliminary investigation into a novel production method for finely divided tin metal (melting point= 231.9-degrees-C) powders is described. The experimental apparatus, which is similar to the Colloidal Gas Aphron (CGA) generator described by Sebba in some earlier work (Chemistry and Industry, 3 (1985) 91), consists of a rapidly spinning disk impeller and shaft within a Pyrex vessel. As with CGA production, the action of the impeller creates sufficient shearing forces to entrain significant volumes of gas within the metal. When this gaseous incorporation is performed in an atmosphere which contains oxygen (air), oxidation of the tin lamellae of the CGA occurs. This reaction leads to a microcosmic structural collapse within the CGA system and discrete particle formation from the plateau border. This effect is not observed in a pure nitrogen atmosphere. The experimental parameters which were varied in this investigation were temperature (260 to 375-degrees-C) and impeller speed (6 000 to 11 500 rpm). Following the removal of the oxide layer from the particles, powder yield and mean particle size were determined. Powder mass yield increased with temperature, whilst little change in the mean particle size of approximately 5 mum was observed. SEM analysis showed that the particles tend to approximate spherical geometry. Powder X-ray diffraction revealed that one crystalline tin phase is recovered.