Abstract: A device for facilitating the placement of particulate solids into voids. In particular, the device allows boreholes to be filled with a particulate solid material with a reduction in the amount of turbulence thereby allowing the achieving of the proper density for the particulate material. The device includes an improved mantle mounted adjacent the outlet end of the particulate material supply tube for separating the particulate solid material from liquids and gases. The mantle has a perforated portion in contact with the supply tube and a solid portion in contact with the borehole.

Abstract: A stemming device for holes which device comprises at least one layer of a esilient material capable of forming a seal in conjunction with the wall of a hole, the seal being characterized in that it prevents, minimizes or substantially retards the flow of flowable, pourable or pumpable material from the hole. The device is used to stem a hole by positioning the same in the hole in a manner such that said stemming device forms a seal in conjunction with the wall of the hole capable of preventing, minimizing or substantially retarding the flow of flowable, pourable or pumpable material from the hole.