what gold mining methods used at ok tedi mine

tjapesblog13: Mining: OK Tedi Mine

 · Because of the methods used for extraction and processing, the OK Tedi mine has created environmental degradation and pollution. Every year, over 80,000 tons of the mine waste is dumped off site of the mine, usually into the river (Mining Tech). …

Ok Tedi Mining Limited – Papua New Guinea

Ok Tedi Mining Limited (OTML) operates the Ok Tedi Mine, the longest running open-pit copper, gold and silver mine in Papua New Guinea. Our registered office is located in Tabubil, Western Province, PNG. We also have a representative office in Port Moresby

(PDF) Ok Tedi copper mine, Papua New Guinea, …

Fish populations utilised by riparian populations along the Fly River, Papua New Guinea (PNG), downstream of the Ok Tedi gold and copper mine have markedly declined in species richness (between 21 ...

A PULP-CHEMICAL STUDY OF SKARN ORE FEED BLENDS AT THE OK TEDI …

and gold content than porphyry ores. The principal copper mineral is chalcopyrite, with minor bornite, chalcocite and covellite. Most gold occurs in association with *Ok Tedi Mining Limited, P.O. Box 1, Tabubil, Western Province, Papua New Guinea. **Ian Wark

Deep Sea Minerals and Mining in the Pacific Islands region

Mining History… • On-land mining methods: - Alluvial Mining: PNG, Solomon Islands - Underground mining: e.g. Vatukoula Gold Mine, Fiji - Open pit: e.g. Ok Tedi Copper Mine, PNG; Gold Ridge, Solomon Islands. • Marine mining is a relatively new method of

Mine groundwater control and slope depressurisation methods at Ok tedi …

Ok-Tedi Mining Ltd. (1999): Risk-based slope design optimisation studies for the Ok Tedi copper-gold mine. SRK (2006): Drainage Adit Geotechnical Investigation SRK (2008): Ok Tedi Underground Advanced Concep-tual Mining Study. SRK (2010): Presentation

Ok Tedi environmental disaster

Mine wastes were deposited along 1,000 km (620 mi) of the Ok Tedi and the Fly River below its confluence with the Ok Tedi, and over an area of 100 km 2 (39 sq mi). BHP''s CEO, Paul Anderson, said that the Ok Tedi Mine was "not compatible with our environmental values and the company should never have become involved."

Mining & Processing

Mining. 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. The current pit design and pit sequencing has been developed to maximise value while meeting environmental constraints agreed with mine-affected communities.

Company Overview

Company Overview. Ok Tedi Mining Limited was established in 1981 to mine the Mt. Fubilan copper-gold ore-body discovered in the Star Mountains in the Western Province of PNG just 16km east of the Indonesian border. OTML is a major producer of copper concentrate for the world smelting and refinery market in Germany, India, Japan, South Korea and ...

Biological monitoring of the impacts of the Ok Tedi copper …

 · The mine produces approx. 80 000 tonnes per day (tpd) of waste tailings and 121 000 tpd of mined waste rock which are discharged directly into the Ok Tedi/Fly River system. The main environmental impacts arising from mining operations are due to the large amounts of sediment discharged into the river system, which results in elevated levels of total suspended solids (TSS) and …

Your question: Which type of mining is most expensive?

There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits. Surface mines are typically used for more shallow and less valuable deposits.

Mining for the Future. Appendix H: Ok Tedi Riverine Disposal Case …

Conventional open pit mining techniques are used to extract about 30 million tonnes of ore and 55 million tonnes of waste rock annually (BHP, 1999). On average, the mine produces ore at a rate of 80,000 tonnes per day and waste rock at a rate of 152,000day.

What is open-cut mining?

Open-cut mining or surface mining is a technique used to extract ore located close to the surface and is the most common method of mining. Open-cut mines are used when deposits of commercially useful minerals or rock are found near the surface and where the overburden (surface material covering the valuable deposit) is relatively thin or structurally unsuitable for tunneling.

Sustainable Development

Ok Tedi Mining Limited (OTML) operates the Ok Tedi Mine, the longest running open-pit copper, gold and silver mine in Papua New Guinea. Our registered office is located in Tabubil, Western Province, PNG. We also have a representative office in Port Moresby

PNG''s Ok Tedi mine disaster money locked in new legal …

 · A fresh legal dispute has erupted over control of a fund set up to benefit the tens of thousands of villagers affected by mining giant BHP''s environmental disaster at the Ok Tedi mine …

tjapesblog13: Mining: OK Tedi Mine

 · Because of the methods used for extraction and processing, the OK Tedi mine has created environmental degradation and pollution. Every year, over 80,000 tons of the mine waste is dumped off site of the mine, usually into the river (Mining Tech). This has very

The BHP and OK Tedi Case, 1984-2000: Issues, Outcomes and Implications for Corporate Social Reporting

15 A Series of Disasters: 1984-1993 Mining was permitted to commence in 1984 without a tailings dam having been constructed. Consequently, the tailings were, from the outset of mining, discharged directly into the Ok Tedi and Fly River system. In addition, the

Major Mines & Projects | Ok Tedi (Mt. Fubilan) Mine

Ok Tedi to ramp up production following mine restart April 1, 2021 Ok Tedi suspends mine amid COVID-19 outbreak March 22, 2021 Ok Tedi Mining Ltd.: Ok Tedi mine life extended by three years September 9, 2020 Ok Tedi suspends PNG operations due to

PNG''sOk Tedi, Development andEnvironment

PNG''sOk Tedi, Development andEnvironment Background to Ok Tedi The Ok Tedi open cut copper mine is located in the southernmost parts ofthe precipitous, rainforest cloaked Star Mountains ofPNG. The border with the Indonesian province of Irian Jaya is only J8 km to the west of the mine…

Ok Tedi Mining Limited

Ok Tedi Mining Limited is a Papua New Guinean company that administers the Ok Tedi Mine in the northern part of the Western Province s main office is located in Tabubil and the building is known as the White House. Its chairman, since 2014, has been former ...

ok tedi | along the ok tedi

Ok Tedi River a sewer. Editorial. Times of Papua New Guinea, 1-7 June, 491:3, 1986. The Yonggom, the refugee camps along the border, and the impact of the Ok Tedi mine. Research in Melanesia 12:30-61, 1989. Social impact of the Ok Tedi mine on the Yonggom villages of the North Fly, 1992. Research in Melanesia 19:23-102, 1995.

Assessing an Assessment: The Ok Tedi Mine

1 Assessing an Assessment: The Ok Tedi Mine Patricia K. Townsend and William H. Townsend Any forum for the discussion of sustainability at a global level must include mining, simply because its environmental impact is so disproportionately great. In the United ...

Pacific Mining Watch

Mining Companies in PNG PNG has a portfolio of mining projects spread across the country. The large projects dominate: Barrick Gold''s Porgera gold mine, Ok Tedi copper mine, Newcrest''s Lihir gold mine, and most recently, Newcrest-Harmony''s Hidden Valley ...

Mining in Papua New Guinea

Up until 1970, there was little mineral extraction in Papua New Guinea. Since the 1970s, mineral extraction has dominated the national economy. With the exception of the Ok Tedy Mine (copper-gold) almost all of the mining in PNG has been gold mining. The two largest gold mines are the Porgera (Enga Province) and Lihir (New Ireland Province) mines.

Acid Rock Drainage Management at the Ok Tedi Mine, …

The Ok Tedi porphyry copper-gold mine is located in the Star Mountains of Western Province, Papua New Guinea. Open-cut mine commenced in 1984 and is due to cease around 2010.

Mine Details | MiningLink

Mining is undertaken at the OK Tedi mine in the conventional drilling and blasting method with the use of four 6030 excavators and four 6050 shovels that load a fleet of haulage trucks that comprise six 789C and 36 793F trucks.

Mineralogical and Metallurgical Examination of Fluorosilicate Mineral Flotation in the Ok Tedi …

4. Ok Tedi Mining Ltd, Mill Metallurgy, PO Box 1, Tabubil, Papua New Guinea. form a significant part of the roles of the mine geology and mill metallurgy departments for the remainder of the mine life. The fluorine problem at Ok Tedi is related to theof skarn

The Ok Tedi Negotiations

The Ok Tedi Negotiations Rebalancing the Equation in a Chronic Sustainability Dilemma By Peter S. Adler, Janesse Brewer, and Caelan McGee The Keystone Center August 24, 2007 Mt. Fubilan Pit, Ok Tedi Mine. Photo courtesy of Ok Tedi Mining Limited.

An overview of land use conflicts in mining …

 · The Australian mining company BHP Minerals began prospecting at the Ok Tedi site in the 1970s and began excavation during the mid-1980s. It is now one of the biggest open-cut copper and gold mines in the world. As Low and Gleeson (1998) report, the

Investigation of the reasons for copper and gold loss in …

Ok Tedi Mining Limited generates a copper and gold concentrate from its porphyry and skarn ore deposits located at Mt. Fublian, Western Province, PNG. The predominant porphyry ore-type is blended with high grade skarn ores to optimize copper and gold feed grades to the concentrator.

Community & Social Development

Ok Tedi Mining Limited (OTML) operates the Ok Tedi Mine, the longest running open-pit copper, gold and silver mine in Papua New Guinea. Our registered office is located in Tabubil, Western Province, PNG. We also have a representative office in Port Moresby

Fish Stock Biodiversity

Ok Tedi Mining Limited (OTML) operates the Ok Tedi Mine, the longest running open-pit copper, gold and silver mine in Papua New Guinea. Our registered office is located in Tabubil, Western Province, PNG. We also have a representative office in Port Moresby

Ok Tedi Mine, Oceania

Project Description. From 2006, SRK Australia and SRK North America have performed studies contributing to several components of the Ok Tedi copper-gold mining project. The mine is situated in a mountainous, seismically active region with difficult access and extremely high rainfall.

Ok Tedi Mine

Over the years, four programs of rock stress measurement and interpretation have been completed at the Ok Tedi Mine in Papua New Guinea, each providing different interpretations of the in situ field stresses. Measurements were taken at different locations and

Methods of Gold Mining

Small suction dredges are much more efficient at extracting smaller gold than the old bucket line. This has improved the chances of finding gold. Smaller dredges with 50-to-100-millimetre (2 to 4 in) suction tubes are used to sample areas behind boulders and along …