I had posted some information on Antares last year. They have now made a deal that is exactly what Duran can look to do. The similiarities between the resources that each company hold are close, but in fact Duran has the edge in %Cu. Both are in Peru.
http://www.miningweekly.com/article/first-quantum-to-buy-latin-america-focused-antares-for-c460m-2010-10-18