A man walks in front of a fire that will help crack a granite slab at the Pissy Granite Mine in the centre of Ouagadougou on January 28, 2022. - Surrounded by roads, houses and administrative building in Ouagadougou lies the massive, forty year old Pissy Granite Mine. Hundreds of artisanal miners work cracking the granite slabs and carry out small and large chunks up the steep walls of the crater for a few euros a day. (Photo by JOHN WESSELS / AFP)