• Geotechnical Properties of Mine Tailings

    2017 1 13 CRR of the four tailings were found to be comparablewith previous report data onother metal tailings and the consolidation stress showed little impact on CRR The laboratory tests provided useful information to understand the geotechnical behaviors of mine tailings including seepage deformation strength as well as seismic responses

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  • Mercury Contamination from Historical Gold Mining in

    2016 11 29 Gold mining evolved from hydraulic mining of unconsolidated placer deposits in the early days of the Gold Rush to underground mining of hardrock deposits and finally to large scale dredging of low grade gravel deposits which in many areas included the tailings from upstream hydraulic mines By the mid 1850s in areas with sufficient surface

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  • Chinese mining in Oregon

    Tailings the often huge amounts of waste rock that resulted from hydraulic mining would be piled or neatly hand stacked into what have come to be called Chinese walls The neatly stacked piles of tailings enabled miners to store a larger quantity of rocks within a smaller area than random piling did

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  • Dry Stack Tailings Design Considerations

    2017 5 9 er tailings deposits slurry thickened or paste The resulting filtered product is an unsaturated often between 50 to 75 percent saturated material that is firm with a low compressibility and low hydraulic conductivity In this state the filtered tailings are often termed dry stacked tail

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  • THESIS HYDRAULIC CONDUCTIVITY OF FLY ASH

    2020 9 25 HYDRAULIC CONDUCTIVITY OF FLY ASH AMENDED MINE TAILINGS The objective of this study was to evaluate the effect of fly ash addition on hydraulic conductivity k of mine tailings Fly ash amended mine tailings have potential application as construction materials in active mines transportation earthworks and other geotechnical engineering projects

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  • Specialists in Hydraulic Mining techniques

    XR3 has the equipment and in house expertise to deliver cost effective and environmentally sustainable hydraulic mining solutions The equipment is ideally suited to Tailings reclamation of polymetallic or coal tailings storage facilities Mineral sand mining Mining of other soft deposits laterites alluvials clay

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  • Mercury Contaminated Hydraulic Mining Debris in San

    2010 5 26 the hydraulic mining debris comprises up to 56 of the sediment in core sediments deposited during the time of hydraulic mining The surface sediment of cores taken in 1990 were found to contain up to 43 hydraulic mining debris reflecting a continuing remobilization and redistribution of the debris within the bay and transport from the watershed

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  • THESIS HYDRAULIC CONDUCTIVITY OF FLY ASH

    2020 9 25 HYDRAULIC CONDUCTIVITY OF FLY ASH AMENDED MINE TAILINGS The objective of this study was to evaluate the effect of fly ash addition on hydraulic conductivity k of mine tailings Fly ash amended mine tailings have potential application as construction materials in active mines transportation earthworks and other geotechnical engineering projects

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  • Dry Stack Tailings Design Considerations

    2017 5 9 er tailings deposits slurry thickened or paste The resulting filtered product is an unsaturated often between 50 to 75 percent saturated material that is firm with a low compressibility and low hydraulic conductivity In this state the filtered tailings are often termed dry stacked tail

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  • The pressure on recovery

    2010 7 16 There is currently about 1 billon tonnes of coal residing in tailings around Australia and hydraulic mining is a way to gain access to this with the average tailings dam offering around a 50

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  • Tailings Management

    Lundin Mining operates five mines with five active tailings facilities and uses two widely accepted methods of tailings disposal underground disposal involves mixing tailings with products such as sand or cement followed by disposal as a paste backfill or hydraulic backfill in previously mined areas of underground mines and

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  • Engineering properties of gold tailings International

    2007 4 27 The engineering properties of the tailings have been categorised into textural hydraulic and mechanical properties The textural properties include the particle size distribution and the specific gravity The hydraulic properties include the water characteristic curve and the saturated and unsaturated hydraulic conductivity

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  • Gold Fever Giant Gold Machines

    2015 7 9 Giant Gold MachinesHydraulic Mining An ancient northern California river once laid down an immense bed of gold bearing gravel There had to be an easy way of getting down to the ancient streambeds now buried in the mountains There was hydraulic mining

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  • New Century selects contractors for hydraulic mining

    2018 2 23 The hydraulic mining due diligence process and operational site visits also provided in depth exposure to a number of large scale hydraulic mining operations around the world allowing the company to have full confidence in NPE and Paragon s operational proposal for the Century tailings deposit

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  • Best Practices for Tailings Dam Design

    2017 9 7 Background Recent major tailings dam failures have led to an industry wide review of the design and management of tailings storage facilities Before the 1960s mine tailings were often disposed directly into ponds lakes rivers or natural topographic depressions or stored in impoundments supported by earthen dams without necessarily applying engineering principles McLeod et al 2015

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  • Hydraulic Mining in the Historic Southwest Montana

    2015 5 28 Hydraulic mining in Montana from ellenbaumler blogspot The gold fields of Alder Gulch and Last Chance Gulch were two of the biggest placer gold deposits in the world Placer deposits consist of loose particles of gold mixed into topsoil sand and gravel Placer gold is near the surface

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  • Hydraulic Mining

    Hydraulic Mining Small 50 150t/hr coal tailings reclamation project Management of fine coal TSF reclamation project through hydraulic mining pumping and reprocessing through the mine site s CHPP Proposed Hydraulic Mining solution included Water supplied to 2 x HP pumps at approx 280m3/hour HP pumps deliver water to 1 x monitor

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  • Practical Considerations in the Hydro Re Mining of Gold

    2016 1 1 Hydraulic re mining is generally best suited to reclamation of hydraulically deposited tailings and fine sands Coarser residues are better re mined by mechanical means Mechanical reclamation is an expensive option for finer tailings and dredging is generally more expensive than hydraulic re mining especially where labor rates are low

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  • Tailings Hydraulic Re Mining Paragon Tailings

    Hydraulic Re mining of a Tailings Storage Facility TSF is the most cost effective solution to reprocess material as well as environmentally sound Paragon Projects specializes in creating a tailored turnkey design for optimal reclamation of your tailings storage facilities with our in house design and manufacturing team

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  • Thickened tailings loop test to corroborate the hydraulic

    Conventional tailings disposal in reservoirs with greater geotechnical stability e g exhausted mine pits Segregation of tailings filtering stacking of coarse tailings and hydraulic disposal for fine tailings Filtration and stacking of total tailings coarse and fine Filtration and stacking of total tailings with overburden mining

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  • CHASING YOUR TAILINGS A REVIEW OF PLACER

    2019 10 15 ground Hydraulic mining uses a stream of water directed under pressure against a bank In hydraulic mining water is conveyed to a working face by a pipeline or hose and is forcefullydirected against that face through a movable nozzle or monitor The loosened debris is washed into a waiting system of sluices from which the gold is

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  • The Dumps Tailings and Tail of Sluices

    The Dumps Tailings and Tail of Sluices Rare early gold mining view in Calif ornia American River mining country Placer Co Hydraulic Mining 1860 806 Creator Thomas Houseworth Co Publication Information The Bancroft Library University of California Berkeley Contributing Institution UC Berkeley Bancroft Library Collection

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  • Tailings Reclamation Hydraulic Mining Reclamation of

    One of the most efficient ways of tailings reclamation is hydraulic mining Our hydraulic mining solutions utilise high pressure pumping systems and specialised equipment to re pulp tailings deposits which allows for reprocessing This in turn gives the opportunity to unlock the true value of tailings

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  • Hydraulic Mining

    2012 9 3 Hydraulic mining techniques currently being trialled successfully in Queensland coal mines can be extended across a wide array of minerals Hydraulic Mining Solutions HMS an Australian South African joint venture established in 2009 is at the forefront of this developing industry Hydraulic mining allows cost effective and environmentally sustainable management of tailings for most

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  • Mining History Hydraulic Mining

    2017 3 6 The Malakoff Diggins is the largest hydraulic mining site in California Years of hydraulic mining has left an artificial canyon 7 000 feet long 3 000 feet wide and 600 feet deep Early small scale placer miners referred to the area as Humbug due to many failed attempts to mine

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  • THE BEHAVIOUR OF MINE TAILINGS DURING HYDRAULIC

    The environmentally acceptable disposal offine particled mining and industrial wastes by the formation of hydraulic fill slimes dams is becoming an increasingly important aspect of the total mining endeavour Relatively little is known of the behaviour of waste slurries during deposition

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  • Hydraulic Mining Remining Tailings Facility Mining

    HYDRAULIC MINING Over decades Fraser Alexander established a unique way of remining old tailings facilities for re processing due to improved equipment technologies The application and effectiveness of the hydraulic mining method is a function of various factors ranging from topography site layout hardness of material particle size

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  • Mine Tailings Pumping and Transportation

    2018 2 28 Finally the tailings often still hold high value depending on the resource This allows the tailings to be extracted again using a hydraulic dredging system and pumped to a separation plant for an additional round of extraction This is seen in many gold and iron ore plants that are keen to extract as much of the value material as possible

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  • Hydraulic mining

    2020 8 16 Hydraulic mining use of a powerful jet of water to dislodge minerals present in unconsolidated material including mine tailings placer deposits alluvium laterites soil rich in iron oxides and saprolites soil rich in clay It has also been applied to consolidated materials from sandstones through coal to hard rock Hydraulic mining encompasses hydraulicking sluicing and

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  • Hydraulic Mining in the Historic Southwest Montana

    2015 5 28 Hydraulic mining in Montana from ellenbaumler blogspot The gold fields of Alder Gulch and Last Chance Gulch were two of the biggest placer gold deposits in the world Placer deposits consist of loose particles of gold mixed into topsoil sand and gravel Placer gold is near the surface

    Get Price
  • Tailings Management Services

    The company further provides services for the hydraulic re mining of tailings In addition to this EnviroServ Tailings has expertise necessary for the construction and remediation of TSFs and waste storage facilities SERVICES EnviroServ Tailings in collaboration with various partners offer the following services to the mining and heavy

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  • Dry Stack Tailings Design Considerations

    2017 5 9 er tailings deposits slurry thickened or paste The resulting filtered product is an unsaturated often between 50 to 75 percent saturated material that is firm with a low compressibility and low hydraulic conductivity In this state the filtered tailings are often termed dry stacked tail

    Get Price
  • Tailings management

    2021 7 1 Tailings comprise crushed rock and process water emitted from the gold elution process in the form of slurry once gold has been extracted As tailings contain impurities and pollutants they are placed in tailings storage facilities engineered to contain them in line with our tailings management programme

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  • Fraser Alexander Tailings and Multotec innovate mining

    2011 9 28 Having already developed a track mounted hydraulic mining gun the solution was right in front of us Talking about and specifying mining technology At that time Fraser Alexander Tailings had initiated a Full Tailings Dam Cyclone study and Multotec was one of

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  • Sediment from hydraulic mining detained by Englebright

    2005 10 10 facilitated hydraulic mining because tailings were quickly disposed of by dumping them into the canyons below Large floods with high stream powers remove all but the coarsest boulders from the steep narrow canyons Fig 3 This removal explains the lack of long term storage of mine tailings in the main channels while much sediment remains in

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  • Geotechnical Properties of Mine Tailings

    In addition the hydraulic conductivities of the two tested fine tailings are smaller than those of the copper and gold tailings from Qiu and Sego and larger than that of the fine oil sand tailings from Wong et al Compared to the organic tailings the metal tailings generally present a larger hydraulic conductivity

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  • Mine Tailings Dredges Mine Tailing Dredging

    2010 2 2 Clear tailings ponds and direct feeling dewatering plants with mining tailings dredges and dredging equipment from IMS Dredges IMS is the world s leading producer of one truck transportable dredging systems and has delivered more dredges for lake marina and canal projects than any other

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  • DRDGold South Africa s largest tailings project kicks

    2018 11 22 Removal of tailings facilities reducing health risks for surrounding communities from possible exposure to dust Removal of sulphides through a sulphuric acid plant to reduce acid mine drainage risk Re use of currently impacted mine water in the hydraulic mining process and Treatment of excess water to potable drinking water standards

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  • Consolidation Modeling for Design of Complex In pit

    2020 12 15 mine sites age a shortage of suitable locations for safe and economic disposal of mine tailings often presents itself with mine operators looking for new and innovative alternatives In recent years in pit Tailings Storage Facilities TSFs have garnered attention as one viable alternative As the name suggests these are storage facilities

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  • The new idea of transporting tailings logs in tailings

    2000 7 1 This paper introduced a new idea of transporting mine tailings logs in mine tailings slurry pipeline and a new technology of mine cemented filing of tailings logs with tailings slurry The hydraulic principles the compaction of tailings logs and the mechanic function of fillbody of tailings logs cemented by tailings slurry have been discussed

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