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Littérature scientifique sur le sujet « Copper mines and mining – Chile – Coquimbo »

Auteur : Grafiati
Publié le 10 mars 2023

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Articles de revues sur le sujet "Copper mines and mining – Chile – Coquimbo"

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Mascaró, Mauricio, Isao Parra-Tsunekawa, Carlos Tampier et Javier Ruiz-del-Solar. « Topological Navigation and Localization in Tunnels—Application to Autonomous Load-Haul-Dump Vehicles Operating in Underground Mines ». Applied Sciences 11, no 14 (16 juillet 2021) : 6547. http://dx.doi.org/10.3390/app11146547.

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Mobile robots are no longer used exclusively in research laboratories and indoor controlled environments, but are now also used in dynamic industrial environments, including outdoor sites. Mining is one industry where robots and autonomous vehicles are increasingly used to increase the safety of the workers, as well as to augment the productivity, efficiency, and predictability of the processes. Since autonomous vehicles navigate inside tunnels in underground mines, this kind of navigation has different precision requirements than navigating in an open environment. When driving inside tunnels, it is not relevant to have accurate self-localization, but it is necessary for autonomous vehicles to be able to move safely through the tunnel and to make appropriate decisions at its intersections and access points in the tunnel. To address these needs, a topological navigation system for mining vehicles operating in tunnels is proposed and validated in this paper. This system was specially designed to be used by Load-Haul-Dump (LHD) vehicles, also known as scoop trams, operating in underground mines. In addition, a localization system, specifically designed to be used with the topological navigation system and its associated topological map, is also proposed. The proposed topological navigation and localization systems were validated using a commercial LHD during several months at a copper sub-level stoping mine located in the Coquimbo Region in the northern part of Chile. An important aspect to be addressed when working with heavy-duty machinery, such as LHDs, is the way in which automation systems are developed and tested. For this reason, the development and testing methodology, which includes the use of simulators, scale-models of LHDs, validation, and testing using a commercial LHD in test-fields, and its final validation in a mine, are described.
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Oyarzún, Jorge, Jorge Núñez, Jerry P. Fairley, Sebastián Tapia, Diana Alvarez, Hugo Maturana, José Luis Arumí, Evelyn Aguirre, Alfonso Carvajal et Ricardo Oyarzún. « Groundwater Recharge Assessment in an Arid, Coastal, Middle Mountain Copper Mining District, Coquimbo Region, North-central Chile ». Mine Water and the Environment 38, no 2 (16 mars 2019) : 226–42. http://dx.doi.org/10.1007/s10230-019-00603-7.

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Proenza, Joaquín A., Lisard Torró et Carl E. Nelson. « Mineral deposits of Latin America and the Caribbean. Preface ». Boletín de la Sociedad Geológica Mexicana 72, no 3 (28 novembre 2020) : A250820. http://dx.doi.org/10.18268/bsgm2020v72n3a250820.

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The region that encompasses Latin America and the Caribbean is a preferential destination for mining and mineral exploration, according to the Mineral Commodity Summaries 2020 of the US Geological Survey (https://www.usgs.gov/centers/nmic/). The region contains important resources of copper, gold, silver, nickel, cobalt, iron, niobium, aluminum, zinc, lead, tin, lithium, chromium, and other metals. For example, Chile is the world’s largest copper producer and the second largest lithium producer. Brazil is the world’s leading niobium producer, the second largest producer of iron ore, and the third-ranked producer of tantalum. Cuba contains some of the largest reserves of nickel and cobalt in the world, associated with lateritic Ni-Co deposits. Mexico is traditionally the largest silver producer and contains the two largest mines in this commodity and, along with Peru, Chile, Bolivia and Argentina, accounts for more than half of the total amount of global silver production. The region also hosts several world-class gold mines (e.g., Pueblo Viejo in the Dominican Republic, Paracotu in Brazil, Veladero in Argentina, and Yanacocha in Peru). Also, Bolivia and Brazil are among the world’s leading producers of tin. The region hosts a variety of deposit types, among which the most outstanding are porphyry copper and epithermal precious metal, bauxite and lateritic nickel, lateritic iron ore from banded iron-formation, iron-oxide-copper-gold (IOCG), sulfide skarn, volcanogenic massive sulfide (VMS), Mississippi Valley type (MVT), primary and weathering-related Nb-bearing minerals associated with alkaline–carbonatite complexes, tin–antimony polymetallic veins, and ophiolitic chromite. This special issue on Mineral Deposits of Latin America and the Caribbean in the Boletín de la Sociedad Geológica Mexicana contains nineteen papers. Contributions describe mineral deposits from Mexico, Panama, Cuba, Dominican Republic, Colombia, Venezuela, Ecuador, Chile, and Argentina. This volume of papers covers four mineral systems (mafic-ultramafic orthomagmatic mineral systems, porphyry-skarn-epithermal mineral systems, iron oxide copper-gold mineral systems, and surficial mineral systems). This special issue also includes papers on industrial minerals, techniques for ore discovery (predictive modelling of mineral exploration using GIS), regional metallogeny and mining history.
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Proenza, Joaquín A., Lisard Torró et Carl E. Nelson. « Mineral deposits of Latin America and the Caribbean. Preface ». Boletín de la Sociedad Geológica Mexicana 72, no 3 (28 novembre 2020) : P250820. http://dx.doi.org/10.18268/bsgm2020v72n3p250820.

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The region that encompasses Latin America and the Caribbean is a preferential destination for mining and mineral exploration, according to the Mineral Commodity Summaries 2020 of the US Geological Survey (https://www.usgs.gov/centers/nmic/). The region contains important resources of copper, gold, silver, nickel, cobalt, iron, niobium, aluminum, zinc, lead, tin, lithium, chromium, and other metals. For example, Chile is the world’s largest copper producer and the second largest lithium producer. Brazil is the world’s leading niobium producer, the second largest producer of iron ore, and the third-ranked producer of tantalum. Cuba contains some of the largest reserves of nickel and cobalt in the world, associated with lateritic Ni-Co deposits. Mexico is traditionally the largest silver producer and contains the two largest mines in this commodity and, along with Peru, Chile, Bolivia and Argentina, accounts for more than half of the total amount of global silver production. The region also hosts several world-class gold mines (e.g., Pueblo Viejo in the Dominican Republic, Paracotu in Brazil, Veladero in Argentina, and Yanacocha in Peru). Also, Bolivia and Brazil are among the world’s leading producers of tin. The region hosts a variety of deposit types, among which the most outstanding are porphyry copper and epithermal precious metal, bauxite and lateritic nickel, lateritic iron ore from banded iron-formation, iron-oxide-copper-gold (IOCG), sulfide skarn, volcanogenic massive sulfide (VMS), Mississippi Valley type (MVT), primary and weathering-related Nb-bearing minerals associated with alkaline–carbonatite complexes, tin–antimony polymetallic veins, and ophiolitic chromite. This special issue on Mineral Deposits of Latin America and the Caribbean in the Boletín de la Sociedad Geológica Mexicana contains nineteen papers. Contributions describe mineral deposits from Mexico, Panama, Cuba, Dominican Republic, Colombia, Venezuela, Ecuador, Chile, and Argentina. This volume of papers covers four mineral systems (mafic-ultramafic orthomagmatic mineral systems, porphyry-skarn-epithermal mineral systems, iron oxide copper-gold mineral systems, and surficial mineral systems). This special issue also includes papers on industrial minerals, techniques for ore discovery (predictive modelling of mineral exploration using GIS), regional metallogeny and mining history.
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Nungesser, Sören Lars, et Stefan Pauliuk. « Modelling Hazard for Tailings Dam Failures at Copper Mines in Global Supply Chains ». Resources 11, no 10 (18 octobre 2022) : 95. http://dx.doi.org/10.3390/resources11100095.

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The global mining industry generates several billion tons of waste every year. Much of it is stored in liquid form, known as tailings, in large impoundments. Recent dam failures at tailing ponds with catastrophic outcomes have raised public concern, such that industry initiatives and investors are beginning to address the problem. So far, a lack of publicly available data makes an independent and comprehensive risk assessment challenging. We introduce a simple and transparent hazard indicator built from environmental proxy variables and screen a global sample of 112 copper mines for natural hazards regarding tailings dams. In a second step, material footprints of copper for the European Union and five major economies are estimated and compared using a Multi-Regional Input–Output model, shedding light on the regions of origin. Finally, hazard scores are linked to regional copper footprints to identify hotspots in supply chains of final consumption. The most hazardous mines are located in Chile and Peru including some of the world’s largest copper producers. China and the US have the largest copper ore footprints and per capita values in the US were 25 times larger than in India. The United States’ and European footprints are satisfied by domestic extraction to about 66 and 40 percent respectively. Copper from Poland contributes around 19 and 28 percent to supply chains of German and European final demand respectively and, as a consequence, Poland constitutes the main hazard hotspot for Europe’s copper supply chain.
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LAITE, JULIA ANN. « HISTORICAL PERSPECTIVES ON INDUSTRIAL DEVELOPMENT, MINING, AND PROSTITUTION ». Historical Journal 52, no 3 (4 août 2009) : 739–61. http://dx.doi.org/10.1017/s0018246x09990100.

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ABSTRACTProstitution has been linked by many historians and social commentators to the industrial development and capitalism of the modern age, and there is no better example of this than the prostitution that developed in mining regions from the mid-nineteenth century. Using research on mining-related prostitution, and other social histories of mining communities where prostitution inevitably forms a part, large or small, of the historian's analysis of the mining region, this article will review, contrast, and compare prostitution in various mining contexts, in different national and colonial settings. From the American and Canadian gold rushes in the mid- and late nineteenth century, to the more established mining frontiers of the later North American West, to the corporate mining towns of Chile in the interwar years, to the copper and gold mines of southern Africa and Kenya in the first half of the twentieth century, commercial sex was present and prominent as the mining industry and mining communities developed.1 Challenging the simplistic images and stereotypes of prostitution that are popularly associated with the American mining frontier, historians have shown that prostitution's place in mining communities, and its connection to industrial development, was as complex as it was pervasive and enduring.
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Villalobos, F. A., S. A. Villalobos et L. E. Aguilera. « Evaluation of rockburst energy capacity for the design of rock support systems for different tunnel geometries at El Teniente copper mine ». Journal of the Southern African Institute of Mining and Metallurgy 122, no 9 (31 octobre 2022) : 1–11. http://dx.doi.org/10.17159/2411-9717/1249/2022.

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Rockburst events have been a serious problem for many years in many mines worldwide, and in particular at El Teniente mine in Chile. El Teniente is the largest copper mine in the world, located in the Andes Cordillera where high stress levels are present due to intensing mining activity in addition to complex geology. Consequently, the study and management of the rockburst threat are necessary. In this work, the case of the Diablo Regimiento (DR) mine within El Teniente is studied. The energy capacity of dynamic support systems is determined for different tunnel geometries based on two kinetic methodologies, using data from DR. Initially, rockburst potential is determined by means of a stress analysis around different tunnel geometries through the boundary elements method. In the first methodology a yielding zone (YZ) is estimated for each excavation geometry using the finite element method FEM. The second methodology involves the definition and determination of a critical strain energy (SE) around each excavation geometry using a FEM numerical analysis. In both cases, peak particle velocity PPV is estimated by a scaling law, which is subsequently adjusted due to tunnel amplification effects. According to the results, and knowing the working energy capacity applied in DR mine, it was found that the values of energy capacity for the rock dynamic supports were better estimated by the YZ-PPV approach than by the SE approach.
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Shubham Gandhi, Drumil Newaskar, Rohan Apte et Preet Aligave. « India’s Strategy to Procure Lithium to be a Leading Lithium-Ion Battery Manufacturer ». International Journal of Engineering and Management Research 11, no 5 (29 octobre 2021) : 143–48. http://dx.doi.org/10.31033/ijemr.11.5.17.

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Lithium is one of the foremost valuable metal which is widely used for manufacturing batteries and also has other uses in solar panels, ceramics, glasses and pharmaceuticals. Lithium is third most abundant element after hydrogen and helium but the most lithium deposits are only in Bolivia (21 million tons), Argentina (17 million tons), Chile (9 million tons), Australia (6.8 million tons), China (4.5 million tons). Bolivia, Argentina, Chile forms so called lithium triangle. Due to depleting reserves of fossil fuels and its harmful impact on the environment has forced the globe to shift to Lithium-ion batteries which is much eco-friendlier alternative. India’s push for electric vehicles (EV) may cause a considerable change in its energy security priorities, with securing lithium supplies, a key material for creating batteries, becoming as important as buying oil and gas fields overseas. India doesn't have enough lithium reserves for manufacturing lithium-ion batteries. The majority electric vehicles within the country run on imported batteries, mostly from China. At present a lithium-ion battery accounts for 40% of the overall cost of an electrical vehicle. Khanij Bidesh Pvt Ltd is a venture firm of three central public sector enterprises namely National Aluminum Company (Nalco), Hindustan Copper Ltd (HCL), Mineral Exploration Company Ltd (MECL). The KABIL would do identification, acquisition, exploration, development, mining and processing of strategic minerals overseas for commercial use and meeting country’s requirement of those minerals. The mission is to not allow India to fall in a very vulnerable position with a probable threat of supply squeeze as went on within the case of petroleum, with India being the world’s third largest oil importer and to amass cobalt and lithium mines in addition on get into purchase agreements of those minerals. This may help in achieving resource security with regard to strategic minerals.
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Campos, Levi, et Cristian Mardones. « An Economic Evaluation of the Health and Agricultural Damages Caused by Copper Mining in Chile ». Latin American Research Review, 26 septembre 2022, 1–26. http://dx.doi.org/10.1017/lar.2022.16.

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Abstract This study assesses the environmental damage caused by copper mining on surface water bodies in Chile. The few official records on the discharges and concentrations of arsenic and copper only allow for identifying the impacts of some mining operations in the regions of Coquimbo, Valparaíso, and O’Higgins. The economic valuation is carried out through the impact pathway approach, which relates copper production, discharges, concentrations, and dose-response coefficients to establish effects on health and agriculture. The results show that the economic damage due to water pollution occurs mainly in the regions of Coquimbo and O’Higgins. The above is explained because the greatest externalities are generated in agricultural areas, while the damage to health is low because of the small population exposed (97.6% versus 2.4%). Finally, total damages represent 0.43%, 0.26%, and 0.0001% of copper sales in the mining operations analyzed in the regions of Coquimbo, O’Higgins, and Valparaíso, respectively.
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Thèses sur le sujet "Copper mines and mining – Chile – Coquimbo"

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Diaz, Acevedo Nelson Simon. « Exotic deposits derived from porphyry copper systems in Chile ». Thesis, Rhodes University, 1996. http://hdl.handle.net/10962/d1011149.

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The exotic orebodies related to cal-alkaline porphyry copper deposits. are sub-horizontal lenticular bodies of secondary copper minerals that impregnate Tertiary gravels and bedrock of different ages. They lie immediately downslope of the porphyry copper deposits, that is to say. they are related to the propylitic halo of the main deposits, and are considered to have originated with the deposition of copper minerals from solutions that overflowed during the secondary enrichment process. Supergene alteration took place between the late Oligocene and Miocene, by which time both orehodies (exotic and porphyry copper) were established. The paucity of tile denudation since the Miocene in the Andean segment from 21º to 26º latitude S. due to the dominance of a hyperarid climate explains the remarkable preservation of the shallow porphyry copper systems, supergene enriched blankets and associated deposits. This is reflected in the limonites, where the typical boxworks have been partially or totally destroyed on surface by the superleaching. As a result of the lateral migration of the copper-bearing solutions, the exotic deposits show a zonation. alteration and mineralization whose characteristics depend among other factors. on the reactivity of the bedrocks and the Cu/S ratio of the mother deposit. In these deposits three zones can be recognized: Proximal (0 to 2 km Intermediate (2 to 3) and Distal (3 to 8-14 km) with palaeodrainage control. The associations and mineralogical abundance are related to the climate (rain. temperature). In some deposits two important units are detected and they are the Cu-phosphates and Cu-lixiviable (to sulphuric acid) units. The size of tile Chilean exotic deposits varies between 100 and 3.500.000 tons of copper, with a total known resource of 8 M tons of copper. The large exotic deposits are comparable to the resources of a medium-sized porphyry copper- type deposit. The discovery of the exotic deposits is related to the exploration of porphyry copper deposits, where a mass balance of the leached column must be done. Moreover the lithology and alteration of the propylitic halo. permeability, structures, geophysics and geochemistry should be considered. The diorite model is not compatible with a supergene enrichment process, expressed by the absence of colour anomalies, exotic deposits and in the presence of secondary minerals like jarosite, which is coherent with the pyrite deficiency of the system. The projects are for exploitation of reserves by open pit methods. The projects plan to extract and to crush copper oxide ore which will he pre-treated with concentrated sulphuric acid prior to heap leaching, solvent extraction and electrowinning. The copper output varies between 10,000 and 50,000 ton per year of catilode copper. The total investment varies between 20 and 100 millions dollars. For project calculations, estimation of 65 % - 82 % copper recovery and 37 - 40 kg/ton net acid consumption can be used due to the nature of ore. The leaching time is estimated as 30 to 180 days for heaps of 4,5 to 30 metres high. As a result of this, the plant capacity is determined by an annual equivalent of 10,000 to 25,000 ton Cu per year. Pit planning has heen carried out using diverse software on the basis of 5 x 5 x 5 m and 10 x 10 x 10 m block models, evaluated using a kriging package built into the program, giving an overall waste/ore ratio (induding pre-stripping) of 0: I (in an outcrop) to 3: I. The location of the mine and plant sites are associated with the porphyry copper in production, for this the already installed facilities can be used. So there is no need to build a new mine camp or access. The environmental impact is summarized relating to the characterization of the physical, biological and socio-cuitural effects, using the framework of the Base Line study and the Impact evaluation derived from the construction and project operation phases. The conclusions and recommendations will diminish, mitigate and/or eliminate impact derived from the specific activities.
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ZACHÄUS, Alf. « Chancen und Grenzen wirtschaftlicher Entwicklung im Prozess der Globalisierung : die Kupfermontanregionen Coquimbo (Chile) und Mansfeld (Preussen/Deutschland) im Vergleich 1830-1901 ». Doctoral thesis, 2010. http://hdl.handle.net/1814/14491.

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Defence date: 29 June 2010
Examining Board: Prof. Heinz-Gerhard Haupt (EUI); Prof. Peter Hertner (Universitaet Halle); Prof. Renate Pieper (University of Graz); Prof. Sebastian Conrad (EUI)
PDF of thesis uploaded from the Library digital archive of EUI PhD theses
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Livres sur le sujet "Copper mines and mining – Chile – Coquimbo"

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U, Augusto Millán. La minería metálica en Chile en el siglo XIX. Santiago de Chile : Editorial Universitaria, 2004.

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Lowell, J. David. Using applied geology to discover large copper and gold mines in Arizona, Chile, and Peru. Berkeley, Calif : Regional Oral History Office, The Bancroft Library, University of California, 1999.

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La industria del cobre en la América española : México, Chile, Perú y Cuba, siglos XVI-XIX. Morelia, Mich. [Mexico] : Universidad Michoacana de San Nicolás de Hidalgo, Facultad de Historia, 2005.

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Lavandero, Jorge. El cobre no, es de Chile : El cobre no es de Chile. Santiago de Chile : Ediciones Tierra Mía, 2001.

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El cobre no, es de Chile : El cobre no es de Chile. Santiago de Chile : Ediciones Tierra Mía, 2001.

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Barriga, Fernando Acosta. Chile : La minería en el siglo XXI : dónde estamos, hacia dónde vamos. Santiago, Chile : Ocho Libros, 2017.

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U, Augusto Millán. La minería metálica en Chile en el siglo XX. Santiago de Chile : Editorial Universitaria, 2006.

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Contested communities : Class, gender, and politics in Chile's El Teniente copper mine, 1904-1951. Durham, N.C : Duke University Press, 1998.

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Copper workers, international business, and domestic politics in Cold War Chile. University Park, Pa : Pennsylvania State University Press, 2008.

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Buried alive ! : How 33 miners survived 69 days deep under the Chilean desert. Boston : Houghton Mifflin Harcourt, 2012.

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