Purpose of the development: Repeated mining of interchamber pillars by a chamber-and-pillar system.

The development stage readiness: The working documentation is developed

Description of the development:
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Development headings are made in the solid under every line of pillars, and rocky ceiling of a development heading and pillars are drilled out in the whole height by parallel lines of vertical and inclined pivoting wells. Ore is let on a development heading in a clamp of roof's broken-heading in a clamp of roof's broken-down rocks. Lines of wells are located on a wedge scheme, so that broken ore was formed in bulk after explosion with the width no more than one of an outlet channel. At output of broken ore, a part of it temporarily is left as a protective barrier.

Information about newness of the development:
there are Ukrainian patents -- 1 items

Possibility of transfer abroad:
Licence's sale
Joint production, sale, exploitation

Photo

Country Kazakhstan

For additional information turn to:
E-mail: gal@uintei.kiev.ua