Best Practice Guidance for Effective Methane Drainage and Use in Coal Mines
April 30, 2025
This report from UNECE outlines recommended principles and standards on coal mine methane capture and...
Report
Best Practice Guidance on Ventilation Air Methane (VAM) Mitigation
In a world increasingly committed to reducing greenhouse gas emissions, mitigation of ventilation air methane (VAM) emissions from coal mines stands out as an effective opportunity to slow down climate change. A single large ventilation shaft at an operating mine can release approximately 50,000 tonnes of methane annually.
Efficient VAM mitigation technologies have been proven in several commercial-sized, long-term projects. For such projects to be economically viable, the value of emission reductions needs to be at the level of around USD 20 per tonne of CO2e. Therefore, compared to many other climate change mitigation actions, VAM mitigation is cost-effective.
This report offers an understanding of the nature and the challenges of mitigating coal mine VAM emissions, provides an overview of strategies to overcome these challenges, and discusses the economics of proposed solutions.
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