• Mining company pays millions for gold dug from mine dumps

     · All of it has been for gold dug out of old mine dumps — of which there are tens of thousands around the state, according to both Voigt and Antonioli. ... owned small mining …

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  • Environmental impact of mining

    Erosion. Erosion of exposed hillsides, mine dumps, tailings dams and resultant siltation of drainages, creeks and rivers can significantly impact the surrounding areas, a prime example being the giant Ok Tedi Mine in Papua New Guinea. Soil erosion can decrease the water availability for plant growth, resulting in a population decline in the plant ecosystem.

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  • From Tailings to Treasure? Miners Make Money Reprocessing ...

     · Mintails, a mine tailings processor, has developed new technology to process 350,000 tons of slimes from its extensive tailings resources. It expects to recover 58 kg of gold per month, and has enough slimes to last until 2025. Goldfields has also developed new technology for a tailings retreatment plant, and processes 12,000 tons of current ...

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  • Waste Rock Dump Management And Stability Evaluation | SRK

    The management of mine waste dumps has historically been assigned mainly to the on-site mining operations. In recent years, focus has turned to a more scientific approach to waste rock dump management and the auditing of these manmade structures.

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  • Tailings

     · Mining and processing industries are among the most intensive sources of environmental pollution, with wastes making up over 90% of extracted mineral raw materials. This leads to the formation of mine dumps that are technogenic geological structures made of rocks or sediments, which vary in composition (chemical, particle-size, bacteriological ...

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  • Collecting Copper in Michigan''s Copper Country

     · While all the mines of the region are closed to copper production, many are maintained as museums and fee dig sites. There are also many abandoned mines in the area that can provide good digging in the dumps but be sure to acquire permission from landowners before visiting any location on private land. Localities: Central Mine: US 41 Central ...

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  • Mine dump

    Define mine dump. mine dump synonyms, mine dump pronunciation, mine dump translation, English dictionary definition of mine dump. n South African a large mound of residue, esp from gold-mining operations Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 ©...

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  • F.No.8(3)/2011-MV Ministry of Mines Government of India

    including the provisions of MCDR, 1988. All the dump related operations are to be invariably a part of Mining Plan/ Scheme of Mining. The details of operations for removal of such dumps need to be shared with IBM along with balance stock remaining in the dump. (ii) Rule 64 C of the Mineral Concession Rules, 1960 provides that in case dumped

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  • Mechanical properties of material in a mine dump at the ...

     · At the mine, the overburden is stripped and broken into relatively uniform fragments, .These fragments are dumped at the internal dump, forming a slope of material of distinctly different sizes .If a dump is made up of only coarse material, its overall strength is the same as the residual shear strength of the overburden.

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  • Guidelines for Mine Waste Dump and Stockpile Design (2017 ...

    Chapter Outlines. This book, Guidelines for Mine Waste Dump and Stockpile Design, is the third book in the LOP Guideline Series and focuses on the investigation, design, operation and monitoring of waste dumps, dragline spoils and stockpiles associated with large open pit mines.This book has been written by a consortium of geotechnical consultants and individuals including Piteau Associates ...

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  • Methodology for a Dump Design Optimization in Large …

     · Abstract: Dump design and scheduling are critical elements to effective mine planning, especially if several of them are required in large-scale open pit mines. Infrastructure capital and transportation costs are considerable from an early stage in the mining project, and through the life-of-mine as these dumps gradually become immense structures.

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  • Top Spots For Gem Hunting In The US

    There are mining opportunities here for all skill levels. Prospectors can use the sluicing technique or collect from the mine dumps. The Morefield Mine has its own exhibit of stones onsite as well as one at the Smithsonian Institution in Washington, DC.

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  • Landfill mining: is this the next big thing in recycling ...

     · Enhanced landfill mining is also relevant for municipal solid waste. In this case landfill mining separates waste into directly recyclable materials (glass, plastic, metals, aggregates) and a refuse-derived fuel fraction, which is further converted into high …

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  • Mine waste dump stability analysis

     · Enhanced landfill mining is also relevant for municipal solid waste. In this case landfill mining separates waste into directly recyclable materials (glass, plastic, metals, aggregates) and a refuse-derived fuel fraction, which is further converted into high-added-value products. Using the new plasma gasification technology, it is possible to ...

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  • Mine dumps from a property law perspective: Movable ...

    Mine waste dump stability analysis - QueensMineDesignWiki

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  • RISK BASED EVALUATION OF MINE WASTE DUMPS

    dumps commonly constructed at the coal mines of southeast and northeast British Columbia (Figure 1). During the 1980''s major expansion of the coal mining industry in British Columbia resulted in the construction of some of the largest and highest mine waste dumps in the world (Photo 1).

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  • Report on Congress Mine and Tailings Dump | Arizona ...

    The ''Report on Congress Mine and Tailings Dump'' file is part of the Fred Hohne Mining collection. Fred Hohne spent many years with Wyoming Minerals (subsidiary of Westinghouse) working on uranium exploration projects, especially the Workman Creek area of Gila County. The collection contains geologic reports, drill hole data and maps of the ...

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  • New gold rush flattens Johannesburg''s famous mining dumps ...

     · Hundreds of massive dumps of "tailings," the waste product left from more than a century of gold mining, dot the area in and around South Africa''s largest city.

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  • Mining Company Pays Millions for Gold Dug From Mine Dumps ...

     · That''s the year cyanide came to Montana, Voigt says. Mine officials say cyanide is a very efficient process - both cheaper and quicker -- to get gold out of the ore. That means there''s a lot less gold left in mine dumps after that 1885 date. Since miners began exploring Montana to look for gold in the 1860s, Voigt has a 20-to-25-year window.

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  • Waste Rock Dumps

    Department of Mines and Petroleum, Mineral House, 100 Plain Street East Perth, WA 6004 Tel: +61 8 9222 3333, Fax: +61 8 9222 3862, Email: [email protected] , Web: Waste Rock Dumps Environmental Notes on Mining, updated September 2009 Waste rock dumps are usually the most visual landforms left after open pit mining.

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  • Open Pit Mine Rock Dump Geotechnical Evaluation

    Mining operations in mountainous terrain generally necessitate development of waste rock dumps on areas of moderate to steeply sloping terrain. The design and monitoring of these waste embankments are an integral part of the mine planning

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  • INVESTIGATION AND DESIGN

    Investigation & design of mine dumps . Includes bibliographical references: p. ISBN 0-7718-9118-0. 1. Coal mines and m1n1ng - waste disposal - British Columbia. 2. coal mines and mining - waste disposal - Environmental aspects - British Columbia. 3. Mineral industries - waste disposal - British Columbia. 4. Mineral industries - waste disposal ­

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  • Impact of mine dumps on the health of communities

     · The mine dumps were included in the study based on their size and the high population density around them. The social and demographic profiles of the exposed and unexposed communities was similar. The studies were divided into three phases that included the cross-sectional studies, panel studies, personal and indoor air monitoring.

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  • Mining company pays millions for gold dug from mine dumps ...

     · In addition, a company called Birdia LLC is planning to remove 2,500 tons of mine waste from an old dump called Birdia on Bureau of Land Management land 2 miles east of Norris.

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  • Waste Management for Mine Solid Waste

    The Mining regulations (dumps) promulgated in the early 1970''s have their emphasis on safety and the integrity of mining operations. Mine waste disposal methods (tailings dams) have affected the environment in which they are situated in many ways: dam failures have damaged not on 1 y property,· 1 i fe loss, po 11 ut i on

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  • How living near a mine dump can kill you | The Citizen

     · The mining industry has, in the past, implemented various strategies to reduce pollution from mine dumps. This has included spraying dumps …

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  • Sampling of Dumps and Tailings | AZGS Document Repository

    The sampling and estimation of the metal present in an ore dump or a tailings heap are matters which are of considerable importance to most men connected with the mining industry, as they are often called upon to handle this class of work, either tor themselves or for others. There are several important points which can be settled concerning ...

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  • Mine dumps from a property law perspective: Movable ...

     · Mine dumps from a property law perspective: Movable behemoths. 10 Oct 2017 - 12:00. Mining dumps are an inescapable feature of the South African landscape. While manmade through the accumulation of mining waste, their size and presence have been compared to that of natural koppies [1]. [2] Surprisingly, as confirmed in the De Beers case, [3 ...

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  • Methodology for a dump design optimization in large …

    Methodology for a dump design optimization in large-scale open pit mines Jorge Puell Ortiz1* Abstract: Modern large-scale open pit mines move hundreds of thousands of tonnes of material daily, from the loading sources to the destination zones, whether these are massive mine dumps or, to a lesser extent, to the grinding mills. Mine dumps can be

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  • Mineral Collecting — The Sterling Hill Mining Museum

    The Mine Run Dump. The Mine Run Dump is temporarily Closed. Our mine run dump area is perfect for both novice and avid mineral collectors. There are two main sections to our mine run dump, the International pile and the Local pile. The International pile contains diverse minerals from all over the world that people can dig through.

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  • The unregulated terrain of historic mine dumps in South ...

     · The term ''mine dump'' is usually used to refer to waste that is consequential to mining operations and comprises of tailing, slimes, waste rock, sand or other residue that is produced during ...

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  • The Toxic Landscape of Johannesburg''s Gold Mines | WIRED

     · More than a century of gold mining has left towering piles of bleached mine waste, known as "tailings," all over Johannesburg''s landscape. Discovery of gold in the region in 1886 led to the ...

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  • Chemical Composition of Samples Collected from Waste Rock ...

    description of selected phosphate mines in southeastern Idaho, showing mine pits, waste dumps, tailings and other phosphate-mining-related features, has been prepared (Causey and Moyle, 2001). Mine waste samples described in this report were collected during field reconnaissance at several of the mines included in the geospatial database.

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  • Methodology for a Dump Design Optimization in Large-Scale ...

     · Abstract: Dump design and scheduling are critical elements to effective mine planning, especially if several of them are required in large-scale open pit mines. Infrastructure capital and transportation costs are considerable from an early stage in the mining project, and through the life-of-mine as these dumps gradually become immense structures.

    Get price
  • Mining Company Pays Millions for Gold Dug From Mine Dumps ...

     · That''s the year cyanide came to Montana, Voigt says. Mine officials say cyanide is a very efficient process - both cheaper and quicker -- to get gold out of the ore. That means there''s a lot less gold left in mine dumps after that 1885 date. Since …

    Get price
  • Sylvania Dump Operations

    The SDO has exclusive rights to reprocess mine arisings and tailings dumps at current host mines, with a profitable operational life of approximately ten years, depending on the operation, and with potential to significantly extend the operating horizon as mining resources are continuously being converted to reserves at host mines.

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