Analysis of information sources in references of the Wikipedia article "格拉斯伯格矿场" in Chinese language version.
Copper is the primary commodity, with a proven and provable reserve of 2.8 billion tonnes of 1.09%.
Open-pit mining at Grasberg normally produces around 140,000 tons of copper ore a day, while underground operations yield 80,000 tons.
Soetjipto told reporters earlier it would take one month for underground mining operations to return to full capacity, adding the mine would only produce 80 percent of its targeted output of copper, gold and silver concentrate this year.
Copper is the primary commodity, with a proven and provable reserve of 2.8 billion tonnes of 1.09%.
Open-pit mining at Grasberg normally produces around 140,000 tons of copper ore a day, while underground operations yield 80,000 tons.
Soetjipto told reporters earlier it would take one month for underground mining operations to return to full capacity, adding the mine would only produce 80 percent of its targeted output of copper, gold and silver concentrate this year.
