In 2007, 296 million metric tons of iron ore were pulled from the mine. The mine is estimated to contain about 18 billion tons of iron ore, plus gold, manganese, copper, and nickel. The Carajas CarajÃ¡s mine sits in The carajas carajÃ¡s (Mountain range Serra) dos carajas CarajÃ¡s. in northeastern brazil
First, it think the phrase should be the net effect. Mixing up affect and effect  is a common error for both learners and native speakers of English. the net effect = the result in light of an important variable.
The net result is a crisis of confidence and legitimacy in the American political system and our institutions. Climate change increases the available energy, but reduces the wind shear, making the net result hard to predict. The net result proves that the age of the totalitarian dictatorship is over. At the end of this first vigorous week of hostilities it is interesting to sum up the net result. The net result of his fusillade of interrogatories, however, was exceedingly meagre.