Tin mining in Bolivia. Workers loaded on a train as it enters a tin mine. An electric train loaded with ore of tin moves out of the mine.
Tin mining in Bolivia. Men wearing helmets with lights work on a hose. A miner sprays water with the hose. Miners with helmets operate a drilling machine as they drill into the roof of the mine.
Tin mining in Bolivia. Men wearing helmets with lights work. Miners with helmets operate a drilling machine as they drill the roof of the mine. Ore of tin is unloaded inside the mine.
Tin mining in Boliva. Men wearing helmets with lights work inside a tin mine. The miners operate a drilling machine as they drill the side of the mine. An electric ore train with workers loaded onto it enters the mine. Ore of tin is unloaded from the train. A man looks at the ore. The ore is dumped.
Tin mining in Bolivia. A view of the road between the hills. Houses and a tin mine in a valley. Mountains in the background. An American Army pickup truck moves through muddy water and rough road. Men loaded onto the truck. The truck moves down a narrow road and crosses a civilian truck.
Construction of roads in Bolivia. A worker uses a pick axe to construct a culvert. Two men shape large stone blocks with hammers. A man talks to them. A worker reads a propaganda comic booklet. A Caterpillar bulldozer levels the earth. A man operates the Caterpillar bulldozer.