Mining or in situ disintegration of hard material – Processes – With material-handling
Patent
1989-11-09
1991-07-23
Novosad, Stephen J.
Mining or in situ disintegration of hard material
Processes
With material-handling
299 35, E21C 4104
Patent
active
050337955
ABSTRACT:
A method of mining seams is provided for a mineral deposit situated beneath a substantial overburden, such as would be found in a mountaintop ridge formation previously mined by contour mining operations so that roadways exist at the sides of the ridge formation. A continuous loop chain cutting device which extends across the width of the ridge is positioned near the front end of the seam. Vehicles supporting the ends of the device move along the roadways so that the cutting device cuts a thin slot in the seam which remove the mineral deposits yet allowing the remaining mineral deposit and overburden to subside gradually after the cutting blade has passed a given point. At a desired point along the length of the ridge, the vehicles direction and the cutting device continues to cut a thin slot in the seam in the opposite direction. This back and forth movement is continued until the mineral deposit is substantially removed from the ridge.
REFERENCES:
patent: 753092 (1904-02-01), Neukirch
patent: 3620573 (1971-11-01), Oxford
patent: 4059309 (1977-11-01), Cleary
patent: 4232904 (1980-11-01), Hurd
Bockosh George R.
Farrar Richard B.
Mayercheck William D.
Bagnell David J.
Koltos E. Philip
Novosad Stephen J.
The United States of America as represented by the Secretary of
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