FIELD: mining. SUBSTANCE: method includes exposure of seam, driving of workings on upper and lower levels on coal seam boundary with preparatory chamber and lighting-up of seam. Novelty consists in working of seam through height of entry after preparing chambers on upper level and driving from lower entry of hole ring up to gob floor. Oxidizer is supplied from lower entry over hole rings. EFFECT: higher efficiency. 2 cl, 1 dwg
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Authors
Dates
1994-05-15—Published
1991-06-21—Filed