FIELD: mining.
SUBSTANCE: cut in the board is arranged across in direction of the mineral bulk dump and is divided into three sections over the length. First, extreme cut sections are worked which abut on its end boundaries. Note here that mineral is displaced beyond the worked board contours limits. Stripping rock is dumped into worked space between lengthwise boundaries.
EFFECT: higher process efficiency owing to increase in that of excavation and transfer equipment.
4 dwg
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