Vanessa Mara edges her giant Caterpillar truck into position and unloads its 240 ton cargo on to a growing pile of purple-blue iron ore next to the crushing plant at Carajas, the world’s biggest iron ore mine that has been cut out of the Amazon jungle.
“My friends say I must really be gutsy to drive this but it is easier than handling a car. You just have to keep to the procedures,” says Ms Mara, who is 26 and previously worked as an office receptionist. “My mum runs a hairdresser and she is very proud of me.”

