Retrieved 17 September Retrieved 22 March The Ok Tedi Mine was scheduled to close in Following heavy rainfall, mine tailings are swept into the surrounding rain forest, swamps and creeks, and have left behind 30 square kilometers of dead forest. About square kilometers were damaged in this way.
This allowed all ore processing residues, waste rock and overburden to be discharged into the Ok Tedi River. In an earthquake caused the half built dam to collapse. The original plans included an Environmental Impact Statement that required a tailings dam be built.
The balance is allocated to current development caxe in the local area Western Province and PNG more generally. The company continued operations without the dam, initially because BHP argued that it would be too expensive to rebuild it. OK Tedi Mining Limited.
Retrieved 18 April The lives of 50, people have been disrupted. Retrieved from ” https: Retrieved 17 April Retrieved 22 March This dumping resulted in the river bed being raised 10 m, causing a relatively deep and slow river to become shallower and develop rapids, thereby disrupting indigenous transportation routes. However, fish counts decrease closer to the mine. Most of Papua New Guinea’s land is held under a system of native titlewith ownership divided amongst many small clans, while the central government retains control over how resources that lie under the ground are used.
The massive amount of mine-derived waste dumped into the river exceeded its carrying capacity. This mining pollution, caused by the collapse of the Ok Tedi tailings dam system in and consequent switch to riverine disposal disposal of tailings directly into the river for several decades, was the subject of class action litigationnaming Ok Tedi Mining Limited and BHP Billiton and brought by local landowners.
The Ok Tedi Mine was scheduled to close in Thick gray sludge from the mine is visible throughout the Fly River system, although its effects downriver are not as severe.
hedi InBHP reported that 90 million tons of mine waste was annually discharged into the river for more than ten years and destroyed downstream villages, agriculture and fisheries.
There are no waste retention facilities on the premises. Retrieved 4 February About square kilometers were damaged in this way. One of the worst environmental disasters caused by humansit is a consequence of the discharge of about two billion tons of untreated mining waste into the Ok Tedi from the Ok Tedi Minean open pit mine in the Western Province of Papua New Guinea.
BHP and the Ok Tedi Mine by Sebastian O’Connor on Prezi
Archived from the original on 7 February Views Read Edit View history. BHP expressed confidence, stating that it had other sstudy in place that protected shareholders from future legal costs.
Journal of the International Institute. Retrieved 16 February Experts have predicted that it will take years to clean up the toxic contamination.
ok tedi copper mine case study
From Wikipedia, the free encyclopedia. As part of the settlement a limited dredging operation was put in place and efforts were made to rehabilitate the site around the mine. Victoria University, Melbourne, Victoria, Australia. Retrieved 17 September However the mine is still in operation and waste continues to flow into the river system.