METHODS EMPLOYED FOR UNDERGROUND STOWING (A RESUME OF A LITERATURE SURVEY)

Special Research Report SR-55 The inconvenience and unhealthy nuisance associated with actual or potential surface subsidence and surface refuse disposal are definitely undesirable. So far these inherent aspects of underground mining operations have more or less been accepted since underground mining of natural resources i.s necessary for the economic welfare of the society. Today) the overall economy of a mining area is seriously affected when a surface blight exists and continues to develop. However) it is obviously wasteful when large amounts of coal must be left in the ground for surface support or other reasons. Therefore a solution to this general problem should provide extra benefits for the producer, the community) and the Commonwealth.