Arzuma Tindano (28) leads an eight-member crew of miners at Djuga, an artisanal mine in north-eastern Burkina Faso. They all trust him. They believe in his strength and his judgment. His 'office' is a 20 meters deep, narrow, dangerous and claustrophobic pit. The air there is thick, hot and humid with constant dust atacking his longs. He is just about to go into his pit again to do his night shift after he finishes his cigarete. Working in the night is better, he says, because the air is a bit cooler.