Keep bulk materials flowing efficiently through chutes, hoppers, silos and kilns by applying vibration energy. For many years, the necessity to store material in bulk has created a problem - how to get it out of the storage vessel. Typical problems include bridging, ratholing, clinging and arching. Once a pluggage exists, it becomes necessary to remove it in order to continue with production. One of the first things an operator will do is try to dislodge it in some manner. Historically, techniques such as water and air lances, silo cleanout equipment, shot gun blasts and even dynamite have been used to eliminate material blockage.