Underground Borer

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Underground Borer

 

(large-diameter), a machine designed for drilling well holes up to 390 mm in diameter upward along a coal seam and for drilling out drill holes 500-850 mm in diameter downward in steep, inclined, or gently sloping seam beds. The first large-diameter underground borers in the USSR were manufactured by the Kemerovo Factory in the Kuzbas (1936) and Gorlovka Factory in the Donbas (1938). An underground borer consists of a rotary boring machine, a boring-tool stand, bracing supports, and coal-removal and dust-collecting devices. Lightduty underground borers—the so-called underground boring machines—are used for drilling inclined and horizontal drill holes.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The first is the Compact Underground Borer (CUB) project involving two Canadian mining companies, Falconbridge and Placer Dome, the contractor Redpath and the TBM manufacturer Boretec.
Lewis, Mike, 'Compact Underground Borer (CUB)', Proceedings, International Symposium on Mine Mechanization and Automation, Colorado School of Mines, June 10-13, 1991.