In the manufacture of MSAR^® fuel, the heavy oil residue particles are milled to approximately 3 to 5 microns in size. Compared to ordinary atomised fuel oil droplets, MSAR^® droplets have a far greater surface area facilitating increased carbon burnout. Conventional atomised fuel oil droplet particles are comparatively large, have limited surface area, and leave significant quantities of unburned carbon in the particulate emissions formed during combustion. The inorganic nature of any ash residue enhances its suitability for re-processing.”