BUMI.JK is trading 5.1% up at IDR 143, rebounding from yesterday’s close of IDR 136 after several days of mixed price action. - This follows recent announcements that its subsidiary, Wolfram Limited, has begun underground mining activities at the Mt. Carlton project, progressing ahead of schedule and accessing higher-grade ore. - The recommissioning of the Mt. Carlton project on June 30, 2026, and the commencement of underground mining are significant steps in the company's diversification strategy.