E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
262/6
E21C 41/00 (2006.01)
Patent
CA 1044709
ABSTRACT This invention relates to the recovery of valuable miner- als from deposits thereof in the earth and is particularly di- rected to a method of mining which affords recovery of at least a major portion of a seam of valuable mineral lying relatively near the surface of the earth without seriously involving the destructive effects upon the environment, inherent in surface mining. In practicing the method a relatively small proport- ion of the overburden covering a seam of useful mineral is re- moved, for later replacement, and a proportion of the valuable mineral in the seam much greater than that underlying the re- moved overburden is recovered by operations conducted in the pit formed by removal of overburden from selected areas, the recovery of these portions of the mineral seam being coven- iently accomplished by what is known as augur mining from spaced pits disposed in predetermined patters relatively to the mineral seam.
265128
LandOfFree
Method of recovering useful minerals from subterranean... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of recovering useful minerals from subterranean..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of recovering useful minerals from subterranean... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-217171