TAMPING DEVICE AND METHOD

摘要

This invention relates to a tamp for tamping a blast hole, the tamp comprising a superabsorbent polymer component and a semi -permeable membrane (11). This invention also provides for a method of tamping a blast hole wherein a tamp is inserted into the blast hole, the tamp comprising a superabsorbent polymer component and a semi -permeable membrane wherein the tamp is soaked with an aqueous liquid either before or after its insertion into the blast hole so that it expands into contact with the walls of the hole.