SHANGHAI, May 12 (Xinhua) — Baoshan Iron & Steel Co., Ltd., known as Baosteel, on Tuesday said it has recently made its first yuan-denominated iron ore purchase worth over 100 million yuan (about 14.1 million U.S. dollars) with Australian mining giant Rio Tinto. The subsidiary of China Baowu Steel Group Corporation Limited said the cross-border Renminbi (RMB) settlement was supported …