G9 INTERNATIONAL utilizes steel shot blasting and painting booths – a process that produces a much higher surface profile than silica sand. Another advantage in using steel shot over silica sand for surface preparation is its ability to be recycled, filtered and used again and again. In addition, steel shot poses no environmental hazard, while sand can be harmful to the environment when used for blasting.mental hazard, while sand can be harmful to the environment when used for blasting.