Peru's exports may crack the US$50bn ceiling for the first time next year on surging metals prices, according to the government.
But the long-delayed project remains under suspension until 2019.
The latest news from junior mining companies operating in Mexico and Argentina.
This is the second strike in a week to affect the country's mining operations.
Bolivian mining exports, which account for one quarter of the country's hard currency earnings, continued their year long climb thanks to stronger metals prices.
Precious metals were trading around five-month lows just before the Fed's decision to increase interest rates.