| 摘要 |
A mobile material transfer apparatus having a conveyor mounted on a vertically pivotal boom and a pivoting depository including pivotal side hoppers for depositing material into a center hopper and from the center hopper onto the belt, the whole apparatus being pivotally mounted on a self propulsion unit and pivotal about an axis generally through the vertical centerline of the propulsion unit; and methods of using such a device for more efficient strip mining are disclosed.
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