Chile's government said this week it would allow the company to retain 30% of its profits from last year to help finance an ambitious investment plan until the end of the decade.
The departures come against a backdrop of falling commodity prices that has been less profitable for Trafigura than the booming markets earlier in the year.
The US is already sharing information with countries seeking foreign funding for mining projects and allied governments, foreign mining companies and financial institutions that can help kick-start projects.