Multi-Year Commitment Deepens Partnership Between BUMA Australia and Whitehaven BUMA Australia Pty Ltd, the Australian subsidiary of PT Bukit Makmur Mandiri Utama (BUMA), has secured a substantial multi-year contract extension with Whitehaven Coal to continue mining services at the Blackwater Mine in Queensland through 2030. The AU$740 million agreement reinforces the long-standing collaboration between the…