1 edition of Case studies of submarine tailings disposal found in the catalog.
Case studies of submarine tailings disposal
1993 by U.S. Bureau of Mines, Alaska Field Operations Center in Juneau, AK .
Written in English
|Statement||edited by George Poling, Derek Ellis.|
|Series||OFR -- 89-93, 37-94, Open file report (United States. Bureau of Mines) -- 93-89, 94-37|
|Contributions||Poling, George., Ellis, Derek V., Pelletier, Clem., University of British Columbia., U.S. Bureau of Mines. Alaska Field Operations Center.|
|The Physical Object|
|Pagination||2 v. :|
Studies indicate that thickened paste tailings can provide up to a 40 per cent reduction in tailings dam construction, both in material . MOLYHIL PROJECT TAILINGS STORAGE FACILITY DEFINITIVE FEASIBILITY STUDY Submitted to: Thor Mining PLC Level 1, Rokeby Road SUBIACO WA DISTRIBUTION: 1 Electronic Copy - Thor Mining PLC 1 Copy - Golder Associates Pty File Size: KB. submarine tailings discharge systems, advanced environmental assessment and monitoring methods, and oceanographic modeling systems. Successful submarine, tailings disposal (STD) has occurred at several mines. The U.S. Bureau of Mines (BOM) has undertaken studies of the disposal of mining and milling wastes in the marine environment.
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Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an gs are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.
The extraction of minerals from ore can be done two ways: placer mining, which. The basic submarine tailings disposal (STD) design consists of a tailings line to a deaeration / mixing chamber, with a seawater intake line, and discharge to location and depth allowing gravity.
studies are published using the term Submarine Tailings Disposal (STD) 41, Submarine Tailings Deposition (STD) 10, Deep Sea Tailings Disposal (DSTD) 18, Deep Sea Tailings Placement (DSTP) 5, and Author: Bernhard Dold.
This handbook discusses a systematic, risk-based approach to tailings management. It provides examples of tailings containment, disposal and rehabilitation, and points to future trends in tailings management.
It does not provide specific consideration of riverine, shallow submarine or deep submarine tailings placement methods. Case Studies 84 a. Riverine Discharge i. Grasberg Copper and Gold Mine in Indonesia 84 ii. Porgera Gold Mine in Papua New Guinea 92 iii.
OK Tedi Mine in Papua New Guinea 97 iv. Tolukuma Gold Mine in Papua New Guinea b. Marine Discharge/Submarine Tailings Disposal/Deep Sea Tailings Placement i. Ellis DV, Poling GW () Submarine tailings disposal.
Marine Georesources and Geotechnology Google Scholar Ellis DV, Poling G, Pelletier C () Case studies of submarine tailings disposal: Volume II — further case histories and screening by: Submarine tailings disposal (STD) has been utilised at over 13 coastal mining sites around the world to date (some have now ceased operations).
feasibility studies and site selection require a. REGULAR ISSUE FEATURE | MINE WASTE DISPOSAL IN THECEAN O Gold Mining and Submarine Tailings Disposal Review and Case Study BY EVAN EDINGER A fringing coral reef in Buyat Bay, Indonesia, June This reef at 3 m depth is closest to gold mine tailings outfall.
Note high water turbidity, and the mixture of live and dead corals. To enhance understanding of tailings management & demonstrate how the mining industry is managing the risks associated with tailings disposal, this publication offers a collection of 21 case studies prepared by technical experts throughout the industry in many parts of the world.
Fully illustrated, it also provides an overview describing tailings, the main concerns & issues relating. Mine tailings that were produced during the exploitation of the Ulveryggen siliciclastic sediment-hosted Cu deposit in northern Norway were disposed into the inner part of Repparfjorden from to / This study focuses on the mineralogy and geochemistry of the submarine mine tailings and underlying natural marine sediments from the inner part of Repparfjorden, as Author: Yulia Mun, Sabina Strmic Palinkas, Matthias Forwick, Juho Junttila, Kristine Bondo Pedersen, Beata S.
The mining industry is a fundamental industry involved in the development of modern society, but is also the world’s largest waste producer. This role will be enhanced in the future, because ore grades are generally decreasing, thus leading to increases in the waste/metal production ratio.
Mine wastes deposited on-land in so-called tailings dams, impoundments or waste-dumps Cited by: ENGINEERING AND SCIENTIFIC PRINCIPLES: Tailings disposal in rugged, high precipitation environments: an overview and comparative assessment / J.A.
Caldwell and J.D. Welsh --Characteristics of mill tailings and their behavior in marine environments / G.W. Poling --Deep circulations in inlets Indian Arm as a case study / R.W. Burling --A note on. - Review of In-pit Disposal Practices for the Prevention of Acid Drainage – Case Studies - Septem Open pit mines that have ceased production are increasingly being considered for the permanent and environmentally acceptable disposal of mine waste rock and tailings that are, or have the demonstrated potential to become.
tailings disposal costs relative to the cost of land-disposal. The U.S. Department of the Interior concluded that, on average, STD use resulted in a 17% reduction in capital costs and a % increase in operating costs.4 How is Submarine Tailings Disposal Done.
Mines have a long history of dumping their waste into the sea. Deep-sea tailings disposal (DSTD) and its shallow water counterpart, submarine tailings disposal (STD), are practiced in many areas of the world, whereby mining industries discharge processed mud- and rock-waste slurries (tailings) directly into the marine environment.
Pipeline discharges and other land-based sources of marine pollution fall beyond the regulatory scope of the Cited by: 6. companies using submarine tailings disposal.
Although submarine tailings disposal is the cheapest method for dealing with tailings, only % of the world mines still dump mine waste into the sea. Brazil, China, Russia, USA, Canada and Australia have prohibited sea dumping of tailings, or they have.
The Environmental Impact of Submarine Tailings Disposal at the Island Valley Copper Mine on Vancouver Island: A Case History in Environmental Policy: 12 Morgenstern, N.
Geotechnics and Mine Waste Management - Update: Seminar on safe tailings dam constructions. But in a colder climate, when you have a drained surface, the tailings will freeze.” Layers of frozen tailings accumulate like a layer cake, one layer for each winter.
These unconsolidated (low-density) tailings cause the facility to fill up more quickly, resulting in a loss of disposal space.
Rabbit Lake in-pit tailings management facility. Pembuangan. Limbah Tailing (Tailings Disposal). Whats Tailing Notable examples are slimes in the phosphate industry and red mud in the alumina refining industry. Tailings are essentially finely-ground rock particles of no practical or economic value, mixed with water.
Tailings are the residues of ores after the valuable mineral constituents have been extracted. The basic submarine tailings disposal (STD) design consists of a tailings line to a deaeration / mixing chamber, with a seawater intake line, and discharge to location and depth allowing gravity flow of a coherent density current to final sedimentation area.
Such STD systems can place mine tailings at locations and depths constraining environmental impact to (1) Cited by: Description: TROUBLED WATERS HOW minE WASTE DUmping iS pOiSOning OUR OcEAnS, RivERS, AnD LAkES Earthworks and miningWatch canada, February Like this book.
You can publish your book online for free in a few minutes. Uranium mill tailings are generally disposed of in tailing ponds; however, management of these wastes differs from tailings derived from other metal-ore operations.
The Uranium Mill Tailing Radiation Control Act of regulates disposal of these wastes, as uranium tailings present special disposal problems. Data from coas31,32 and deep-sea 34 case studies also suggest recovery of macrofaunal abundance and species richness within three years after the end of tailings deposition, but with Cited by: methods to manage their tailings.
An alternative to land-based tailings storage is the disposal of tailings material at sea, in a practice known as Deep Sea Tailings Discharge or Submarine Tailings Disposal (STD). STD is undertaken in only a handful of locations worldwide, with a significant number of these in Norway’s fjord regions.
The mobilization of tailings during a breach can be calculated using first principles by estimating the gravimetric solids content of the resulting outflow. The selected solids content estimate is up to the practitioner and should be developed on a case by case basis.
A rationale for the selectedFile Size: 2MB. Moran, Robert E.,Mining Submarine Tailings Disposal [STD]—Summary Concepts: Scientific Group of the London Protocol, 2 nd Meeting 19 – 23 May Download the Paper Original Document Link. Submarine Tailings Disposal (STD) is perhaps the most common offshore disposal technique and involves the deep water discharge of tailings to the sea (Moore, Pelletier et al.
Various pages within this website present a brief overview of the various surface and offshore tailings storage methods used today.
These environmental effects led to the development of new submarine disposal methods where the pipe discharges tailings in the sea below the euphotic surface mixing zone (Ellis and Ellis, ).
STD methods were first used in by the Island Copper Mine in Canada (Ellis et al., ), which evolved in the s into Very Deep Submarine Cited by: the submarine tailings disposal option is nowadays again being evaluated. This paper shows the factors to be considered for the final decision making for the best tailings disposal option.
METHODOLOGY In order to be able to predict accurately the environmental long-term behavior of the tailings on. Environmentally, the past years have experienced a very positive approach to improving the quality of effluents discharged from mining and milling processes, and ultimately the quality of seepage from the tailings impoundment area into the environment.
This book assembles all the various aspects of the process and of tailings management which have an impact on the. Mine Tailings Dam Case Studies. Background: A large Gold Mine site north of Kalgoorlie, Western Australia, required application for hectare gold tailing dam site.
The tailing dam required a long term dust suppression solution which would be easily applied with one singular application to provide dust control for 6 to 12 months.
Case Study. Tailings Risk Management (Africa) The site comprises of an opencast mine that exploits gold bearing arsenopyrites. The tailings storage facility (TSF) includes a valley dam across the Twangiza river, which has a final wall height of m making it one of the highest earth dams in the world.
Submarine tailings disposal in Repparfjord. The Kvalsund municipal board adopted the planning programme in When the local council made its consultative statement about the planning programme, it commented on both environmental and societal consequences.
The submarine tailings disposal was a big concern, as will be explained in detail Cited by: 1. In the case of Michilla mine, the sea disposal of the tailings was halted and the tailings were removed and deposited in an on-land tailings impoundment.
In the case of the Ensenada Chapaco, the deposition point was changed in due to problems with turbidity and sedimentation in the intertidal zone, and the tailings are now deposited at Cited by: These safety guidelines and good practices for tailings management facilities promote good practices that will help avoid accidents at such facilities and minimize the effects of any accidents that should still occur.
By using these guidelines, Governments and industry are fostering the protection of the environment and human welfare in our region.
Production of tailings The disposal of tailings is commonly identified as the single most important source of environmental impact for many mining operations (Vick ).
This is not surprising when considering that the volume of tailings requiring storage can often exceed the in-situ total volume of the ore being minedFile Size: 2MB. Tailings and Mine Waste ’10 includes over 40 papers which present state-of-the-art papers on mine and mill tailings and mine waste, as well as current and future issues facing the mining and environmental communities, including technical capabilities and developments, regulations, and environmental concerns.
The book will be of interest to. to allow tailings to be placed below the water surface. This method can be used to prevent oxidation of sulphidic tailings and related acid drainage. Submarine tailings disposal is sometimes used in very site-specific conditions, for example where land based disposal would cover lands with very high biodiversity, economic or cultural value, for.
Tailings are finely ground rocks and other mineral waste as a result of mineral processing. Due to the way minerals are processed, tailings can contain concentrations of processing chemicals.
This can make mine tailings an environmental concern, so proper transportation and disposal are crucial. Consequently, the next step is to pump mine.
In the US Bureau of Mines (part of the Department of the Interior) carried out a series of case studies of submarine tailings disposal which concluded that - at least theoretically - STD could only be considered where a proposed disposal site had no history of "upwelling", because of the dangers of tailings rising to the surface [US.
However, the feasibility of submarine tailings disposal is almost entirely dependent on specific cases (Tomich Kent, pers. comm.), and in the case of the AJ Mine Project in Juneau, AK, the EPA granted an exemption to the Echo Bay Mining Co.
and agreed to extensive studies and research that could lead to approved submarine tailings disposal (US. Submarine tailings disposal – case study – Black Angel, Greenland:Changes made subsequently to the processing and discharge methods:(i) Minerals processing changes reduced the lead content in the tailings from % Pb in to % Pb in (ii) Increasing the density of the tailings, by addition of seawater and coagulation and.Tailings disposal in a fjord, regardless of the contents, would make it impossible to achieve good status due to the smothering of the bottom.
In addition, the disposal could be in breach of article if the tailings have high concentrations of priority chemical substances.