Examinando por Materia "MINAS"
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Ítem Análisis al avance en la ejecución de la locomotora minero energética Plan Nacional de Desarrollo 2010-2014(Universidad EAFIT, 2014) Bravo Ledezma, Serafín; Hernán Dussán, Gustavo; Reyes, EduardoLa minería, durante la última década, ha sido considerada como uno de los motores de crecimiento económico del país y como tal fue incluida dentro de los sectores económicos que el presidente Juan Manuel Santos denominó “las locomotoras de crecimiento”, debido a estos sectores o actividades económicas tienen el potencial de ofrecer una mayor contribución para el logro de los objetivos de desarrollo planteados por el gobierno en el Plan Nacional de Desarrollo 2010-2014 -- Este documento hace un análisis de los avances de la “locomotora minero-energética”, en su componente minero, para lo cual, en primer lugar se hace una presentación general del sector enunciando sus puntos relevantes en cuanto a producción, exportaciones, inversión extranjera directa (IED) y participación del PIB nacional, así como las metas y objetivos fijados por el gobierno en este sector -- Seguidamente se analizan, con base en las metas fijadas en el Plan Nacional de Desarrollo 2010 – 2014 y los indicadores macroeconómicos, los avances que ha tenido la locomotora durante lo corrido del gobierno actualÍtem Diagnóstico de madurez y lecciones aprendidas de gestión de proyectos en Mineros S.A.(Universidad EAFIT, 2023) Leal Carreño, Marzia Valentina; Díez Benjumea, Jhon MiguelÍtem Efectividad en el liderazgo situacional y tipos de poder en Mineros S.A : un comparativo generacional(Universidad EAFIT, 2020) Mesa Cardona, Erika Fabiola; López Gallego, Francisco DaríoThis research aimed to analyze the leadership styles practiced within the company Mineros SA, as well as the effectiveness and types of power by generational group, for which the measurement instruments of situational leadership developed by Hersey and Blanchard and the French and Raven instrument were applied. The qualitative survey was divided into three focus groups: baby boomers, generation X and millennials, where 65 valid responses were obtained. From the information obtained through the mentioned instruments, the consultative style E2 could be found as the predominant style, and secondly, the participatory style E3. Therefore, a people-oriented trend is perceived, but the absence of the delegative E4 style was also found in the different age groups, and millennials were identified as the most effective and adaptable, followed by baby boomers and, finally, by those belonging to generation X. Regarding the types of power, there is evidence of a perception of low use of legitimate power within the organization, and referring power was identified as one of the most common, which is focused on the charism, which coincides with the results of leadership styles, since the strongest are those related to relationships.Ítem Notas geográficas y geológicas(Imprenta Nacional, 1926) Lleras Codazzi, RicardoÍtem Petrographic and litho-geochemical characterization of the VMS deposit at El Roble mine, Colombian Western Cordillera(Universidad Eafit, 2020) Murillo Bedoya, José Manuel; Marín Cerón, María Isabel; Echeverri Franco, BalmerEl Roble Mine (Cu-Au) siliciclastic-mafic volcanogenic massive sulfide (VMS) deposit, is located at El Carmen de Atrato, Chocó, Colombian Western Cordillera. This 4-million-ton VMS occurs replacing black chert rocks between Upper Cretaceous volcanic Barroso Formation and Upper Cretaceous Urrao member of Penderisco Formation. Major, trace and REE elements, indicate that there are at least two different mantle sources (E-MORB and N-MORB) from the volcanic Barroso Formation(?). Then the close relation between black chert unit and E-MORB related basalts may have leaded the VMS mineralization. The 2D geochemical vector modelling from drill-cores around “Zeus” ore body shows positive correlated anomalies for the AI (Alteration Index), CCPI (Chlorite Carbonate Pyrite Index), Tl and MgO with the presence of hyaloclastites, becoming important exploration vectors for the VMS at the North Volcanic Zone of the Andean Cordillera. Nevertheless, the Na2O negative anomaly close to the ore body, is not conclusive in such type of VMS due to overprinted hydrothermal alteration closely related to the Cenozoic arc environment.