World mine production is estimated to have dropped, driven by a decline in Chile as a result of the strike at BHP's Escondida and weaker output at state producer Codelco.
The US$2.5bn project has faced fierce opposition from environmental groups since it was submitted for approval in September 2013.
South America figures are for Argentina, Brazil and Venezuela, which are the region's only producers of primary aluminum.
The US$460mn project was submitted in December last year.
Excellon Resources, with the Platosa silver mine in Mexico, aims to follow up on previous high grade drill results at its Miguel Auza silver-gold-lead-zinc asset in the country.
BNamericas speaks with Keith Barron, CEO of Aurania Resources, to learn more about the company's Lost Cities project in Ecuador.
The new rules, the government said, positively impact around 4,500 imports not produced in the country.