Abstract: A pneumatic particulate blaster apparatus consisting of a hopper having an open top for receiving particulate material and having a lower terminus communicating with generally cylindrically configured hollow tubing, vibrating means mounted on a lower side of the hopper, auger means in the tubing for feeding the particulate material received from the hopper to a nozzle at a distal end of the tubing and being driven by a prime mover from the other end of the tubing, particulate mix chamber communicating with the distal end of the tubing and receiving air at an inlet above the particulate mix chamber allowing particulate mix tending to aerate with air in a gravitational fall path through a distance in the particulate mix chamber and exiting adjacent a set of multiple venturi orifices in the nozzle communicating therewith, an air receiver tank for communicating with the multiple venturi orifices and having the multiple venturi orifices disposed generally inclined about 10.degree.