Table of Contents
What happened to the Ok Tedi Mine?
In 2013, the PNG Government seized 100% ownership of Ok Tedi Mine and repealed laws that would allow people to sue mining giant BHP Billiton over environmental damage. BHP expressed confidence, stating that it had other indemnities in place that protected shareholders from future legal costs.
Who owns Ok Tedi Mining?
Papua New Guinea (PNG)
Ownership. OTML is a 100 percent Papua New Guinea (PNG) owned entity with 67 percent direct shareholding by the Independent State of PNG and the people of Western Province holding a 33 percent interest. 100% of the benefits from its operations are distributed to the people of Western Province and the State.
Why did BHP leave Ok Tedi Mine?
BHP Billiton had sought a responsible withdrawal from the project after being unable to secure the agreement of other OTML shareholders for early closure of the mine’s operations.
How do they mine in the Ok Tedi mine?
The primary ore is crushed and ground using Semi-Autogenous Grinding and Ball mills to a final grain size of approximately 180 microns. The finely ground material is treated in two mineral floatation circuits to extract the copper, gold and silver as a copper concentrate.
How do they mine in Ok Tedi mine?
The mine is powered by a hydroelectric power facility at Ok Menga, which is a tributary of the Ok Tedi River near Tabubil. There are also backup diesel generators that are used if the flow from the Ok Menga river is not enough to generate sufficient electricity.
What minerals are extracted from Hidden Valley?
Products: Gold and silver doré. Geology/Mineralisation: The major gold and silver deposits of the Morobe goldfield and Hidden Valley are hosted in the Wau Graben. The mine comprises structurally controlled epithermal stockwork-style gold/silver deposits at Hidden Valley, Kaveroi and Hamata.
What mining method is used in Ok Tedi?
open pit operation
Mining of the Mt. Fubilan Ore Reserves is carried out as a large open pit operation using conventional drill and blast techniques, with shovel and excavator loading equipment.
Which state has the most gold?
Nevada
1. Nevada. Currently the top gold mining state of the US, Nevada is home to three of the world’s top 10 gold mines and seven of the top 10 US sites. Nevada’s Goldstrike is the top gold mine in the US, followed by the Cortez and Carlin Gold Mines, with all three located in north-central Nevada.