Kucharov A. DEVELOPMENT OF COAL ENRICHMENT AND GAS EXTRACTION TECHNOLOGY FOR THE USE OF CONSTRUCTION MATERIALS INDUSTRIAL ENTERPRISES: DEVELOPMENT OF COAL ENRICHMENT AND GAS EXTRACTION TECHNOLOGY FOR THE USE OF CONSTRUCTION MATERIALS INDUSTRIAL ENTERPRISES. STJ NamIET [Internet]. 2024 Dec. 27 [cited 2025 Apr. 13];9(4):191-7. Available from: http://niet.uz/index.php/nj/article/view/552