This review will present a number of novel, unusual and new videos and picture that have been observed over the last four decades in our solids processing laboratory and others. The regimes of flow will cover both the dilute phase and dense phase pneumatic transport regions. The phenomena discussed are in general non-obvious ones. The non-obvious statement comes into play when competing physical processes interact in a non linear manner so that one's experience in solids processing of experimental observations is challenged. (C) 2015 Elsevier B.V. All rights reserved.