Exploiting Mining Centers

2018 ◽  
pp. 52-53
Author(s):  
Michael J. LaRosa ◽  
Germán R. Mejía
Keyword(s):  
Mining Centers

scholarly journals Retos Historiográficos En La Historia De Los Pueblos De Indios De La Región Minera Pachuca-Real Del Monte

Xihmai ◽  
2018 ◽  
Vol 12 (24) ◽  
Author(s):  
Verenice Cipatli Ramí­rez Calva [1]
Keyword(s):  
Nineteenth Century ◽  
Present State ◽  
History Of ◽  
Indigenous Participation ◽  
Mining Centers ◽  
Siglo Xix

ResumenEn este artí­culo se efectúa un balance historiográfico acerca de los estudios de corte diacrónico que tratan la zona de Pachuca y Real del Monte en el actual estado de Hidalgo. Encontramos que uno de los principales temas analizados por los estudiosos es el de la minerí­a, y la temporalidad que abarcan dichas investigaciones en su mayorí­a se concentra en el siglo XIX; los especialistas han dejado de lado la historia virreinal de la región en temas anexos a la minerí­a, aunque no exclusivamente mineros, como la participación indí­gena en el abasto de los centros mineros y la presencia de población afrodescendiente, por mencionar algunos temas. Se propone la ampliación del alcance de las investigaciones a asuntos no explorados en la región como el comercio y abasto doméstico de los trabajadores ligados a la mina.Palabras clave: Historiografí­a, Pachuca-Real del Monte, Comercio indí­gena. AbstractIn this article a historiographical balance is made on the studies of diachronic cut that treat the area of Pachuca and Real del Monte, in the present state of Hidalgo. We find that one of the main topics analyzed by the scholars is mining, and the temporality that these investigations cover mostly is concentrated in the nineteenth century, but has left aside the viceroyal history of the region in issues attached to the Mining, but not exclusively mining, such as indigenous participation in the supply of mining centers and the presence of Afro-descendant population, to mention some issues. It is proposed to extend the scope of the investigations to issues not explored in the region, such as the trade and domestic supply of workers linked to the mine.Key words: Historiography, Pachuca-Real del Monte, Indigenous trade. [1] Licenciada en Etnohistoria, maestra y doctora en Antropologí­a Social; Profesora Investigadora de la Universidad Autónoma del Estado de Hidalgo.

scholarly journals False Alarms Analysis of Wind Turbine Bearing System

2020 ◽  
Vol 12 (19) ◽  
pp. 7867 ◽  
Author(s):  
Ana María Peco Chacón ◽  
Isaac Segovia Ramírez ◽  
Fausto Pedro García Márquez
Keyword(s):  
Wind Speed ◽  
Condition Monitoring ◽  
Wind Farms ◽  
Data Partitioning ◽  
False Alarms ◽  
Monitoring And Control ◽  
Condition Monitoring Systems ◽  
Mining Centers ◽  
Critical Components ◽  
And Control

Wind turbines are complex systems that use advanced condition monitoring systems for analyzing their health status. The gearbox is one of the most critical components due to its elevated downtime and failure rate. Supervisory Control and Data Acquisition systems are employed in wind farms for condition monitoring and control in real time. The volume and variety of the data require novel and robust techniques for data analysis. The main novelty of this work is the development of a new modelling of the temperature curve of the gearbox bearing versus wind speed to detect false alarms. An approach based on data partitioning and data mining centers is employed. The wind speed range is divided into intervals to increase the accuracy of the model, where the centers are considered representative samples in the modelling. A method based on the alarm detection is developed and studied together with the alarms report provided by a real case study. The results obtained allow the identification of critical alarm periods outside the confidence interval. It is validated that the study of alarm identification, pre-filtered data, state variable, and output power contribute to the detection of the false alarms.

scholarly journals Captivity, Displacement and Migration Among Indigenous People on Mining Frontiers

2017 ◽  
Vol 15 (1) ◽  
pp. 39
Author(s):  
José Manuel Moreno Vega
Keyword(s):  
Literature Review ◽  
Indigenous People ◽  
Indigenous Population ◽  
Forced Migration ◽  
Colonial Period ◽  
High Demand ◽  
Migration Patterns ◽  
Mining Centers ◽  
And Migration ◽  
Mining Regions

Os centros de mineração foram destinos comuns para a migração indígena durante o período colonial devido à alta demanda de mão de obra indígena que para lá se deslocava principalmente pela quase inexistência de indígenas sedentários nas regiões mineradoras. Uma revisão da bibliografia recente de vários estudiosos sobre os padrões de migração indígena em centros de mineração aborda tópicos afins, como migração forçada, deslocamento e cativeiro, relacionados à violência. Conhecimentos acerca temas do papel das mulheres nesse tipo de processos também constituem problemas das pesquisas relacionadas. As diferentes abordagens adotadas por especialistas neste tópico e, portanto, um conjunto de descobertas diferentes, também devem ser consideradas. Palavras-chave: Paisagens. Mineração. Cativeiro. Deslocamento. Migração. Abstract: mining centers were common places for indigenous migration during the colonial period, because of the high demand on foreign indigenous labor, mainly due to the low sedentary indigenous population in the mining regions. A literature review on the recent work of several borderlands scholars on indigenous migration patterns into mining centers sheds new light on related topics, such as forced migration, displacement and captivity, which relate to violence. It also sheds knowledge on topics such as women’s roles in these type of processes. One thing to consider are the different approaches taken by experts on this topic, and thus, the different set of findings. Keywords: Landscapes. Mining. Captivity. Displacement. Migration.

scholarly journals Historical Outline of Iron Mining and Production in the Area of Present-Day Poland

Minerals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1136
Author(s):  
Paweł Wrona ◽  
Zenon Różański ◽  
Grzegorz Pach ◽  
Adam P. Niewiadomski ◽  
João Pedro Veiga
Keyword(s):  
Iron Ore ◽  
Industrial Revolution ◽  
Iron Production ◽  
Significant Events ◽  
Historical Outline ◽  
Production Techniques ◽  
History Of ◽  
Mining Centers ◽  
Surrounding Areas ◽  
Lower Silesia

The article presents the history of iron ore mining and production in present-day Poland and takes into account mining and production techniques and the influence of mining on the development of the surrounding areas. Examples of development are presented for the most important iron ore mining centers established since the period of the so-called Roman influences—Lower Silesia in the region of Tarchalice and the Świętokrzyskie region in the area of Góry Świętokrzyskie (Świętokrzyskie Mountains). The oldest traces of underground iron ore mining in Poland date back to the 7th–5th century B.C., and iron production dates back from the 1st century B.C. in the Częstochowa region where economically significant iron ore exploitation started in the 14th century and lasted until the 20th century. Studies showed that the development of iron ore mining in today’s Poland was associated with significant events in the country’s history, for example, with the expansion of a network of fortified castles in Silesia or with the industrial revolution. In each case, the increase in iron production resulted in the development and growth of the surrounding areas.

Economic Assessment of Options for Prospective Development of Production Subsystem of Export-Oriented Coal Companies

2021 ◽  
pp. 101-105
Author(s):  
A.O. Kuzmina ◽  
N.V. Karpenko ◽  
S.M. Popov ◽  
A.A. Rozhkov
Keyword(s):  
Mathematical Model ◽  
Economic Assessment ◽  
Coal Industry ◽  
Asia Pacific ◽  
Economic Conditions ◽  
Pacific Region ◽  
Asia Pacific Region ◽  
Prospective Development ◽  
Investment Projects ◽  
Mining Centers

The authors review the challenges and trends of the Russian coal exports and describe fields that are potentially attractive for exports in the new coal mining centers in the East of Russia. A conclusion is made that the only option available for the Russian coal industry in the eastern parts of the country is the export-oriented sustainable development in conditions when the global coal trade is shifting towards the Asia-Pacific region. Scientific and methodological support for the implementation of investment projects of Russian coal companies has been developed for the new economic conditions. The economic and mathematical model is proposed to assess the options of perspective development of production subsystem of an export-oriented coal company, which helps to define the parameters of a rational option to develop the coal sector including the volumes of annual expenses of investors to obtain the highest revenue from coal export.

Natural radioactivity in urban soils of mining centers in Armenia: Dose rate and risk assessment

Chemosphere ◽  
2019 ◽  
Vol 225 ◽  
pp. 859-870 ◽  
Author(s):  
Olga Belyaeva ◽  
Konstantin Pyuskyulyan ◽  
Nona Movsisyan ◽  
Armen Saghatelyan ◽  
Fernando P. Carvalho
Keyword(s):  
Risk Assessment ◽  
Dose Rate ◽  
Natural Radioactivity ◽  
Urban Soils ◽  
Mining Centers

scholarly journals El escándalo de las quiebras en la Real Hacienda: las Cajas Reales de Oruro y Carangas, 1784-1804

2011 ◽  
Vol 18 ◽  
pp. 161-183
Author(s):  
María Concepción Gavira Márquez
Keyword(s):  
Eighteenth Century ◽  
Research Paper ◽  
Rio De La Plata ◽  
Río De La Plata ◽  
La Paz ◽  
Multiple Failures ◽  
La Plata ◽  
Mining Centers ◽  
Bourbon Reforms ◽  
Del Rio

The aim of this research paper is to critically analyze the effectiveness of the Bourbon Reforms in the Viceroyalty of Río de la Plata. In 1802 the chaotic situation and multiple failures of the Royal Treasury led the Crown to send a visitor to the Viceroyalty. It had been denounced as scandalous the  bankruptcies that took place in much of the Charcas’ Cajas Reales: La Paz, Oruro, Carangas. This work deals with bankruptcies  occurred in the two Cajas located in the mining centers of Oruro and Carangas during the last two decades of the Eighteenth-century, a period associated with the Bourbon reforms and its success in the taxation of the American colonies.El objetivo de este trabajo de investigación es analizar críticamente la eficacia de las Reformas Borbónicas en el Virreinato del Río de la Plata. La situación de caos y múltiples quiebras en las instituciones de la Real Hacienda propició que en 1802 la Corona decidiera enviar un visitador al Virreinato, pues se habían denunciado como escandalosas las quiebras en gran parte de las Cajas Reales charqueñas: La Paz, Oruro, Carangas. El trabajo que presentamos aborda la quiebra que se produjo en las dos Cajas ubicadas en los centros mineros de Oruro y Carangas durante las dos últimas décadas del siglo XVIII, periodo vinculado a la reformas borbónicas y su éxito en la fiscalización de las colonias americanas.

scholarly journals Increasing the efficiency of Russian uranium mining enterprises in conditions of excessive supply

2021 ◽  
Vol 266 ◽  
pp. 06006
Author(s):  
A. Dudina ◽  
M. Shabalov ◽  
L. Nikolaichuk
Keyword(s):  
Uranium Mining ◽  
Technological Changes ◽  
Market Mechanisms ◽  
The Past ◽  
Excess Amount ◽  
Market Situation ◽  
Mining Centers ◽  
Market Factors ◽  
The Cost

The article describes the current situation in the global uranium concentrate market, explains the reasons for the formation of an excess amount of finished goods and the subsequent decreasein prices. The authorsevaluated the prospects of using market mechanisms to improve the financial results of Russian uranium mining enterprises. The location of the main mining centers in comparison with the centers of consumption of finished goods, pricing for the products of uranium mining companies, the dynamics of price changes over the past 20 years, the influence of non-market factors on the supply of finished products are analyzed.This study led to the conclusion that the expectation of changes in the market situation is not viable in a long term. The authors outlined the direction to improve the profitability of mining enterprises by introducing technological changes aimed at reducing the cost of the final product.

Sign in / Sign up

Export Citation Format

Share Document