Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TSURUMOTO Tamon,Smelting of Copper Ores and Concentrates by Converter using Oxygen-Enriched Air at Hitachi Mine,Journal of the Mining and Metallurgical Institute of Japan,03694194,The Mining and Materials Processing Institute of Japan,1960,76,861,179-195,https://cir.nii.ac.jp/crid/1390282680957754240,https://doi.org/10.2473/shigentosozai1953.76.861_179