Dayane Leite never wanted to become a sex worker but at the age of 17 her husband died of a heart attack and she couldn’t pay for the funeral. Her home town, Itaituba in Brazil’s northern Para state, is at the heart of the country’s illegal gold-mining trade, so a friend suggested raising the money by having sex with miners, deep in the Amazon. “Going to the mines is a roll of the dice,” she says. “The women are seriously humiliated there. They may be slapped in the face and yelled at.