With the only exception of gold, production numbers for most other commodities mined in the Central African nation are also expected to decline this year.
Authorities say the $2.5 billion illicit mining industry is creating a parallel economy that is deemed to damage the business of those who operate legally.
The Congress-led investigation aims to determine the agency’s role in triggering a 3-million-gallon toxic spill into Colorado’s Animas River on Aug. 5.