FIELD: mining industry. SUBSTANCE: method includes stripping and opencast mining operations, driving of underground opening and development mine workings, performance of stoping operations with location of ventilation drift of the first extraction pillar along the strike, along boundary between opencast and underground mining operations. Opening of mine is carried out by internal trench across the strike from bed outcrop to boundary between opencast and underground mining operations. After excavation of mineral in trench, supports of opening permanent workings are mounted on bed floor for district of underground over entire length of internal trench. Then mounted support is filled with barren rocks from continuous opencast operations in layer 4-5 m hick, District of underground operations is prepared through mounted workings. In extraction of the last stope, at district of opencast operations, after extraction of mineral, mounted on bed floor is support of ventilation drift and as mounting of support goes on, support is filled with barren rocks with thickness of fill at least 4-5 m. EFFECT: reduced total volume of driving of underground mine workings. 2 dwg
