Mining or in situ disintegration of hard material – Mine layouts
Reexamination Certificate
2005-02-08
2005-02-08
Singh, Sunil (Department: 3673)
Mining or in situ disintegration of hard material
Mine layouts
C299S011000
Reexamination Certificate
active
06851757
ABSTRACT:
A method of mining an underground ore body includes the steps of: excavating a plurality of laterally spaced first, ventilation tunnels in the ore body using an auger mining machine; excavating a plurality of laterally spaced second tunnels in the ore body, each second tunnel intersecting at least one associated first tunnel and thereby defining a plurality of first support walls for supporting a roof of the mine, the first support walls comprising regions of the ore body intermediate adjacent second tunnels and each first support wall having a portion of at least one first tunnel extending laterally therethrough; providing a plurality of lateral conduits, each of which is aligned across a respective second tunnel between respective first tunnel portions defined in adjacent first support walls, to provide a series of continuos ventilation tunnels; backfilling the second tunnels to provide a plurality of second support walls for supporting the roof of the mine; and excavating the first support walls.
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Fourie Dirk B
Jordaan Jacobus H
Van Eeden Christiaan H B
Baker & Botts L.L.P.
Eskom
Singh Sunil
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