against the walls of the separator and against each other as a result the particles to be cleaned can become damaged therefore it would be highly desirable to have a new and improved apparatus and method for separating lighter particles from heavier particles in a more efficient and cost effective manner with little or no damage to the heavier particles separators and more particularly pneumatic type separators have been used in the past for cleaning debris from heavier particles such devices have generally required large fans with sufficient horsepower to produce the necessary dynamic forces to separate effectively the lighter particles from the heavier particles moreover some granular materials by reason of their weight require a greater dynamic force to effect the separation therefore large housing units have generally been required to accommodate the fans and motors necessary to generate such dynamic forces therefore it would be highly desirable to have a new and improved method and apparatus for performing the desired separation in a highly efficient and effective manner without requiring the use of bulky and expensive fans and motors or the expenditure of excessively large amounts of energy separators in the past have also served as means for helping dry grain and other granular materials that have become wet such apparatus have generally required special large fans and spreading devices such as conveyors and the like to expose and dry the wet material effectively therefore it would be highly desirable to have a new and improved apparatus for particle separation as well as being able to be adapted to help dry wet granular material without the.