This report is one of the main outputs of the World Bank project "Development of mercury trade diagnostic for Sub-Saharan Africa". The project builds on the current efforts of the World Bank Group, Environmental & Natural Resources in Sub-Saharan Africa, focused on chemicals and wastes. It specifically contributes through the development of a sub-regional trade diagnostic of mercury in Sub-Saharan Africa. In the context of this project, particular attention has been given to the domestic trade of mercury surrounding artisanal and small-scale gold mining – the largest mercury use and demand activity in the region and globally, of which so far little is yet known.