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The report finds that methane from Australian coking coal adds an average of 10-17% to the short-term climate impact of blast furnace-based steelmaking, with some 'super-emitting' mines potentially doubling this impact. It highlights significant underreporting of methane emissions in Australia, specifically citing the Hail Creek mine, and notes that leading steelmakers like ArcelorMittal, Nippon Steel, and POSCO fail to disclose the methane footprint of their coal supplies. The document argues that cutting coal mine methane is a cost-effective near-term decarbonisation step, as over half of these emissions are avoidable using existing technology.