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a grade of coal that can be used to produce good-quality coke (see: coke; compare: steam coal), kivisüsi mis sobib kvaliteetse koksi tootmiseks (vt koks; vrd aurusüsi), марка угля, которую можно использовать для получения кокса высокого качества (см. кокс; ср. энергетический уголь)
metallurgical-grade coal . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/metallurgical-grade%20coal/1/eng (14.08.2026)