Shots of men feeding cattle in large dairy barn. Shot of farm. Brief sequence showing oil drilling operations. TILT UP derrick to sky. LS of tropical vegetation. Sequence showing mining operations, ore railway cars unloading, diesel-towed ore train. PAN over immense open-pit mine. LS of large explosion on one of the "steps" midway between bottom and top of pit. Interior shots of steel mill, flowing metal. Various HASs of sheep ranch. Sequence showing shearing of sheep, processing of wool. Various shots of harbour, of large freighter, of loading operations. Various shots of bulldozer, men at work on new highway through mountains. HASs over new housing subdivision in Miraflores, Colombia, over city. Several street scenes in Miraflores showing market, Indigenous people buying coca leaves for the making of cocaine. MSs and LS of iron mine using much native labour. TRAVELLING HAS of ore train, taken from rear of train, on its way to Bellaorizonte through rocky defiles. HAS of railway yard in Bellaorizonte. Interior shots of steel mill showing red hot rails moving out of machines. HAS of mountains of Bolivia. PAN to HAS of tin mine. Underground shots of tin mine, Indigenous people at work, ore being dumped from ore carts, of workers separating tin ore from rock. MS of sacks with Bolivian coat of arms on them. Sequence on rubber harvesting and processing. Sequence on copper mining underground.