Blasting by-products are collected in a series of vertically mounted, closed end, dust bags suspended on a spring mounted holder. The dust bags are housed in a metal cabinet constructed of high quality steel, with a corrosion resistant enamel finish. Dust is shaken from the bags by a high frequency vibrator mounted on the bag holder. Standard control of the shaker mechanism is by a manually operated air switch, or by an optional automatic shaker control. Dust removed by the shaking process is deposited in the dust sump. Dust and blasting by-products are easily removed for disposal by a slide valve located at the bottom of the sump.