O ciclo da mineração de scheelita no Nordeste.

Abstract

"Die scheelite mining cycle ocurred in a region of Northeast Brazil that includes part of the States of Rio Grande do Norte and Paraiba, usually known as the Northeast Scheelite Province. That province contributed, during five decades, with about 95 percent of the Brazilian production, from which approximately 77 percent were exported. The scheelite mining cycle, that lasted from 1942 to 1993, is over now. This dissertation analyzes the cycle, the internal and externa) factors that affected its evolution, and the impacts it caused during and after it was finished. The end of scheelite mining was a consequence of a combination of low prices with depletion of the mines.