1. THE METHOD OF HANDLING SOLID PARTICLE MATERIAL BY ENTRAINMENT IN FLUID, WHICH COMPRISES PASSING A PRIMARY FLOW OF PARTICLE-LADEN FLUID IN A GIVEN FLOW DIRECTION AND ALONG A PREDETERMINED AXIS THROUGH ENCLOSED CONDUIT MEANS HAVING A SOLID GROUND TRANSVERSE TO SAID GIVEN PRIMARY FLOW DIRECTION, APPLYING A SUCTION TO SAID FLUID TO CREATE RADIAL FLOW FORCES IN SAID FLUID TOWARD SAID AXIS, AGITATING SAID FLUID TO CREATE ROTATION THEREOF ABOUT SAID AXIS SO AS TO CREATE RADIAL CENTRIFUGAL FORCES IN SAID FLUID IN A DIRECTION AWAY FROM SAID AXIS, AND CONTROLLING SAID RADIAL FLOW FORCES RELATIVE TO EACH OTHER TO CREATE A SINK IN SAID FLUID, WHEREBY THE ENTRAINED PARTICLE MATERIAL TRAVELS IN A HELICAL PATH THROUGH SAID CONDUIT MEANS.