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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)
metallurgical coal . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/metallurgical%20coal/1/eng (20.06.2026)
