The U.S. Environmental Protection Agency, in support of GMI, collaborated with the United Nations Economic Commission for Europe to develop a tool to gather information and estimate annual methane emissions from underground coal mines. The Excel-based template simplifies collection of measurement data and provides equations that calculate total annual emissions for a single facility (i.e., underground coal mine). This template is intended to help companies better understand emissions from individual coal mines to identify mitigation options. It can also help governments refine their national-level emissions reporting to the Intergovernmental Panel on Climate Change (IPCC), i.e., by providing a mechanism to support a Tier 3 approach for National Greenhouse Gas Inventories. The template can be modified as appropriate; for example, changing from monthly data collection to a different frequency. It provides space to record additional information, such as from remote sensing campaigns.