| 20090230755 | Method and Device for Mining Subsurface Deposits - In a method for mining underground deposits using a mining machine, wherein an upper and a lower drift are driven, which extend on both sides of the deposit to be mined, and a preliminary bore is sunk between the two drifts, a supporting device is fixed at the mouth of the preliminary bore in the upper drift. A mining machine supported on the supporting device is positioned at the mouth of the preliminary bore so as to be oriented in the longitudinal direction of the preliminary bore, and the mining machine is advanced from the upper drift to the lower drift corresponding to the course of the preliminary bore. | 09-17-2009 |
