BHP teams up with Gulf Coast Marine Distributors to test waste-based biofuel blends on iron ore ships. The fuels, made from used cooking oil and agricultural waste, can cut shipping emissions by up to twenty-five percent without engine changes. The trial responds to tightening global maritime emission rules and investor pressure on mining companies to reduce supply chain carbon. It marks a practical step toward greener bulk shipping on one of the world's busiest iron ore trade routes.