Porgera Mine

Porgera Mine. The mine is located in the Enga Province of Papua New Guinea and is operated by Barrick Gold and Zijin Mining. The mine is one of the largest gold mines in Papua New Guinea, with estimated reserves of over 12 million ounces of gold. The mine has been in operation since the 1990s and has produced over 20 million ounces of gold to date, with significant contributions to the economy of Papua New Guinea and the global gold market, including major companies like Newmont Corporation and AngloGold Ashanti.

Introduction

The mine is situated in the Porgera Valley of the Enga Province, approximately 600 kilometers northwest of Port Moresby, the capital city of Papua New Guinea. The mine is operated by Barrick Gold and Zijin Mining, with Barrick Gold holding a 47.5% interest and Zijin Mining holding a 47.5% interest, while the remaining 5% is held by Mineral Resources Enga, a Papua New Guinea-based company, in partnership with other organizations like World Bank and International Finance Corporation. The mine employs over 2,500 people, with the majority being from the local Papua New Guinea community, and has significant ties to other major mining operations, including Grasberg mine and Ok Tedi Mine. The mine has a significant impact on the local economy of Papua New Guinea, with major contributions to the country's GDP and export earnings, similar to other major mines like Super Pit gold mine and Kalgoorlie Mine.

History

The mine was first discovered in the 1930s by Australian prospectors, but it wasn't until the 1980s that the mine was developed by Placer Dome, a Canadian mining company, in partnership with other organizations like Rio Tinto and BHP. The mine began production in 1990 and was initially operated by Placer Dome, before being acquired by Barrick Gold in 2006, with significant involvement from other companies like Gold Fields and Newcrest Mining. In 2015, Zijin Mining acquired a 50% interest in the mine from Barrick Gold, with the remaining interest held by Barrick Gold and Mineral Resources Enga, in a deal that involved other major players like China National Gold Group Corporation and Shandong Gold Mining. The mine has undergone several expansions and upgrades over the years, including the installation of a new crusher and mill in 2012, with significant contributions from companies like Caterpillar Inc. and Sandvik.

Geology

The mine is located in the Porgera Valley, which is a part of the Lagaip River valley system, near other significant geological formations like Mount Hagen and Mount Wilhelm. The valley is characterized by a complex geology, with multiple faults and folds that have created a series of mineralized zones, similar to other major geological formations like Andes mountain range and Himalayan mountain range. The mine is situated on the Porgera Fault, which is a major fault that runs through the valley, and has significant ties to other major geological features like San Andreas Fault and Great Rift Valley. The geology of the mine is characterized by a series of intrusive and extrusive rocks, including granite and basalt, which have been mineralized with gold and silver, with significant similarities to other major mining operations like Carlin Trend and Witwatersrand Basin.

Operations

The mine is an open-pit mine, with a series of pits and waste rock dumps, similar to other major open-pit mines like Bingham Canyon Mine and Grasberg mine. The mine uses a combination of drilling and blasting to extract the ore, which is then crushed and milled to extract the gold and silver, with significant involvement from companies like Atlas Copco and Outotec. The mine has a processing capacity of over 20,000 tons per day, with a significant portion of the ore being processed at the mine's on-site mill, which is equipped with advanced technology from companies like Metso Outotec and Sandvik. The mine also has a significant infrastructure, including a power plant, water treatment plant, and tailings storage facility, with significant contributions from companies like GE Power and Veolia Water Technologies.

Environmental_and_social_impacts

The mine has had significant environmental and social impacts on the local community, with concerns raised about the mine's water pollution, land degradation, and human rights record, similar to other major mining operations like Ok Tedi Mine and Pebble Mine. The mine has been accused of polluting the nearby Lagaip River and Strickland River, with significant impacts on the local ecosystem and wildlife, including species like saltwater crocodile and tree kangaroo. The mine has also been criticized for its treatment of local landowners, with allegations of forced relocation and human rights abuses, with significant involvement from organizations like Amnesty International and Human Rights Watch. The mine has implemented several measures to mitigate its environmental and social impacts, including the establishment of a rehabilitation program and a community development program, with significant contributions from companies like International Council on Mining and Metals and World Wildlife Fund.

Controversies

The mine has been the subject of several controversies over the years, including allegations of corruption and mismanagement, with significant involvement from organizations like Transparency International and Global Witness. In 2019, the mine was the subject of a major dispute between the Papua New Guinea government and the mine's operators, with significant impacts on the local economy and community, including major companies like Barrick Gold and Zijin Mining. The dispute centered on the mine's operating agreement, with the government seeking to renegotiate the terms of the agreement, with significant involvement from organizations like World Bank and International Monetary Fund. The dispute was eventually resolved, but it highlighted the complex and often contentious relationship between the mine's operators and the local community, with significant similarities to other major mining operations like Grasberg mine and Ok Tedi Mine.