Natural resource industries also raise important questions of sustainability. Despite many decades as a leading producer, there is little risk of depletion. Large discoveries continue to be made, such as the massive nickel find at Voisey's Bay. Moreover, the far north remains largely undeveloped as producers await higher prices or new technologies as many operations in this region are not yet cost effective. In recent decades Canadians have become less willing to accept the environmental destruction associated with exploiting natural resources. High wages and Aboriginal land claims have also curbed expansion. Instead, many Canadian companies have focused their exploration, exploitation and expansion activities overseas where prices are lower and governments more amenable. Canadian companies are increasingly playing important roles in Latin America, Southeast Asia, and Africa.