The fallen ballast mixture is conveyed by a recycling spiral to the hopper of the chamber, gathered by longitudinal and transverse conveyors below the elevator, and then lifted to the separator at the top of the machine. The pure balls, after separation, fall into the separator's hopper for reuse in the shot blasting cycle. Dust generated during the shot blasting process is channeled to the dust extraction system via a suction pipe, where the purified air is released into the atmosphere, and the particulate dust is captured and collected.