This thesis records the investigation into the possibilities of the mechanisation of underground stowage of the coal, with special reference to mining conditions in this country, and is the continuation of several years' practical research conducted in India on hydraulic systems of stowing sand. Since the inception of this work three years ago, the subject has received increased attention from mining engineers. It is realised that the continued development of mechanised coal getting is dependent upon the successful mechanisation of the other operations in and around the coal face.