BHP wants find a way to up output for the industrial metal from its Olympic Dam by 40% even before a proposed and long-awaited mega-expansion of the operation takes place.
Strong performance also came on the back of strategic initiatives, such as non-core asset sales, aggressive cost control measures and a disciplined approach in reducing debt.
The 60-day decree affects 11 districts in the Madre de Dios region, where several studies have found high levels of the toxic element in people, rivers and fish.
Diamond miners have found the remains of a Portuguese ship that disappeared on its way to India laden with gold and other treasure, almost 500 years ago.
Ruling is one of the latest signs of renewed tensions between the Kyrgyzstan government and the miner, which have been locked in a bitter dispute over profit sharing for years.