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US 4,059,963 AGranted
Method of mine backfilling and material therefor
AssigneeJoy Manufacturing Company
InventorWilliam Ross Wayment
Life of this patent
Estimating the term…
Abstract
A method of backfilling in underground mine operations by a mill tailings slurry which is dewatered to provide a material with a controlled water content to permit the dewatered material to be used as a backfill without requiring any substantial dewatering after placement and which material can, when desired, be mixed with selected quantities of cement to provide a mortar for backfilling or surface covering.
Claims8
A method of backfilling underground cavities and the like comprising:
- transporting a slurry of mill tailings and water through a closed conduit system to an underground location, dewatering said slurry at said location as said slurry is received thereat to produce a material of a consistency that said material stabilizes as substantially an unsupported mass without removing water therefrom by auxiliary means, and placing said material in a cavity or the like to be filled.
Dependencies are inferred from the claim text.