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La presente investigación se centró en el diseño de un modelo de gestión ambiental integral con enfoque ecosistémico, destinado a la industria minero-metalúrgica en Santa Lucía, municipio de Minas de Matahambre, Pinar del Río. Como instrumentos se emplearon la evaluación de impacto ambiental y la evaluación ambiental estratégica, esta última aplicada por primera vez al sector minero-metalúrgico en el país. La matriz causa-efecto permitió identificar 37 impactos mbientales asociados a los tres ecosistemas más afectados en la región (montañoso, de agua dulce y el manglar), para los cuales se elaboraron medidas de mitigación, seguimiento y control. Se diseñó y calculó el índice general de impactos negativos para orientar a los decisores en las empresas. Se establecen nuevos indicadores para evaluar la gestión ambiental.

El propósito de la investigación fue identificar y evaluar los impactos ambientales de la explotación mecanizada de yeso (mina Supper-Geso) y arena (cauce del río Cubal) en el municipio de Sumbe (Cuanza-Sul, Angola), como premisa para elaborar un plan de acciones dirigidas al ordenamiento ambiental de estas actividades. La metodología empleada incluyó el análisis de la información productiva y ambiental, representada por: (a) localización de la concesión minera, (b) caracterización del proceso productivo, (c) resultados de las encuestas y entrevistas, (d) valoración de los impactos ambientales y (e) acciones para el ordenamiento ambiental. La metodología propuesta puede ser generalizada al resto de las explotaciones mecanizadas de MPC en el territorio.

The purpose of this work was to establish a baseline (referential) in the Santa Bárbara Experimental Unit from a geological and environmental point of view. The research was descriptive, not experimental, with a field phase. The methodology used consisted of bibliographic and cartographic review, interviews, direct observation in the field, collection and analysis of samples, consultation with specialists, design and updating of plans; and, information processing. As a result, the physical and biotic characterization of the area was obtained. It is concluded that the area has been intervened without taking into account its environmental or geological characteristics, which exerts a critical environmental impact on biodiversity and the natural resources of the area. Three strategies and nine concrete actions are proposed to improve the situation of the study area.

This research focused on designing a comprehensive environmental management model with a systemic approach, aimed at the mining-metallurgical industry in Santa Lucia, Minas de Matahambre municipality, Pinar del Río. Environmental impact assessment and the strategic environmental assessment were used as instruments. The cause-effect matrix allowed to identify 37 environmental impacts associated with the three most affected ecosystems in the region (mountainous, mangrove and drinking water), for which monitoring, mitigation and control measures were developed. General index of negative impacts was designed and calculated to guide decision makers in companies and new indicators were established to assess environmental management. [ABSTRACT FROM AUTHOR]

Deposition of solid wastes in the Katenguenha dump site is a serious environmental issue in the locality of Huambo (Angola). The objective of this work is to assess the environmental impact caused by solid waste deposition. The integrated relevant criteria method was used to identify and evaluate the environmental impact. The results indicated that the solid waste dump site has a negative impact on all environmental aspects (physical, biological and social). They are category II environment impacts with an environmental impact rate above 6.

The study was aimed at identifying and evaluating the environmental impacts of gypsum mechanized exploitation (Supper-Geso mine) and sand (Cubal river bed) in the municipality of Sumbe (Cuanza-Sul, Angola as a premise to elaborate an actions plan directed to the environmental management of these activities. The analysis of the environmental and productive information, represented by: (a) location of the mining concession, (b) characterization of the productive process, (c) surveys and interviews results, (d) assessment of environmental impacts and (e) actions for environmental management were included in the methodology used. The proposed methodology could be generalized to the rest of mechanized exploitation of construction materials in the territory. [ABSTRACT FROM AUTHOR]

Con el propósito de facilitar a los concesionarios de canteras de materiales para la construcción una herramienta metodológica para efectuar el cierre de estas y garantizar una minería sostenible se propuso un procedimiento en seis etapas a partir del diagnóstico realizado en 22 canteras, ubicadas en tres regiones mineras cubanas. El procedimiento busca disminuir los impactos ambientales provocados por la explotación de las canteras y ofrecer a la industria un estándar para lograr uniformidad en la planificación y ejecución del cierre con un costo mínimo.

A través del método de los criterios relevantes integrados de Buroz se identificaron los elementos que generan el impacto ambiental en el fundo Los Clavelitos, Venezuela, debido a la presencia de hidrocarburos en forma de emanaciones naturales (menes). Los componentes que se afectan en el medio físico son: suelo, agua, aire, y en el biológico, la flora y la fauna. Se realizaron pruebas de laboratorio sobre las muestras de agua y suelo, las que indicaron en su mayoría que los parámetros analizados se encontraban dentro del rango permisible por la normativa venezolana. El componente más afectado del medio físico es el aire, con un valor de impacto ambiental de 5,7 y probabilidad de ocurrencia moderada; para el medio biológico el factor fauna tuvo un impacto ambiental de 6,2, con una probabilidad de ocurrencia alta. Se propone un sistema de medidas mitigantes y correctivas considerando todos los impactos encontrados.

The purpose of this work was to establish a baseline (referential) in the Santa Bárbara Experimental Unit from a geological and environmental point of view. The research was descriptive, not experimental, with a field phase. The methodology used consisted of bibliographic and cartographic review, interviews, direct observation in the field, collection and analysis of samples, consultation with specialists, design and updating of plans; and, information processing. As a result, the physical and biotic characterization of the area was obtained. It is concluded that the area has been intervened without taking into account its environmental or geological characteristics, which exerts a critical environmental impact on biodiversity and the natural resources of the area. Three strategies and nine concrete actions are proposed to improve the situation of the study area. [ABSTRACT FROM AUTHOR]

Deposition of solid wastes in the Katenguenha dump site is a serious environmental issue in the locality of Huambo (Angola). The objective of this work is to assess the environmental impact caused by solid waste deposition. The integrated relevant criteria method was used to identify and evaluate the environmental impact. The results indicated that the solid waste dump site has a negative impact on all environmental aspects (physical, biological and social). They are category II environment impacts with an environmental impact rate above 6. [ABSTRACT FROM AUTHOR]

In order to provide the owners of construction material concessions with a methodological tool that was not available until today to deal with mine decommissioning and to ensure a sustainable mining, it is proposed to implement a six-phase procedure based on the analysis carried out on 22 quarries located in three mining areas of Cuba. The procedure is to reduce environmental impacts caused by the exploitation of quarries and provide the industry with a standard procedure to achieve uniform closure planning and execution at a minimum cost [ABSTRACT FROM AUTHOR]

The presence of hydrocarbons in the State Farm Los Clavelitos has a negative impact on the environment. For that reason, the elements contributing to this effect are identified and evaluated by applying the Buroz Integrated Relevant Criteria method. It was demonstrated that the presence of hydrocarbons in the state farm is owed to natural emissions known as Menes. The elements that are affected in the physical environment are the soil, the water and the air and in the biological environment are the flora and fauna. Lab test works were performed which included testing samples of water and soil. The test results showed that most of the parameters tested were within the permissible limits established by the Venezuelan regulations. According to the method applied, the most impacted components were those of the physical environment in the air factor with an environmental impact value of 5,7 with a moderate probability of occurrence while the environmental impact value for the biological environment in the fauna factor was 6,2 with a high probability of occurrence. Finally, it is proposed to implement a group of corrective and remediating measures taking into account the impacts identified. [ABSTRACT FROM AUTHOR]

The objective of this investigation is to evaluate the physical environment of the Santa Lucía pyritic poly-metallic ore deposit (Pinar del Río, Cuba) from the mining and environmental points of view. The deposit was exploited through opencast mining; nowadays it is an environmental liability and a potential source of environmental degradation. Barite deposits, rusty material from the iron cap, overburden, quarries and old exploration holes were characterized by means of photo interpretation methods, collection of data on the current environmental condition, detailed geotectonic description of the deposit and surrounding areas, consultation to the experts involved in the project and those with experience on the site, socioeconomic and statistic information of the population, check lists, projects and compared scenarios. Two zones have been identified, one having a serious impact compared to the other one with a lesser impact. Generation of acid drain and the contamination of the waters with high levels of toxicity are among the most significant impact; therefore, one of the actions proposed is treatment of the waters for human consumption for being contaminated with heavy metals. [ABSTRACT FROM AUTHOR]

El residual conocido como WL (waste liquor) se genera en la tecnología de lixiviación ácida de minerales lateríticos que aplica la empresa Pedro Sotto Alba (Compañía Moa Nickel S.A.) para precipitar el níquel y el cobalto en forma de sulfuros. Este residual se descarga al río Cabañas con una concentración de metales, acidez y temperatura que superan las normas ambientales de vertimiento. En este trabajo se analizan las principales variantes de tratamiento que han resultado del estudio de esta problemática y se propone un nuevo proceso desarrollado en el Centro de Investigaciones del Níquel.

The residual known as WL (waste liquor) is generated at the acid leach technology that is used in Pedro Sotto Alba interprice (actually Moa Nickel S.A.) during nickel and cobalt precipitating in the sulfide plant. The WL with a metals concentration, acidity and temperature that overcomes the environmental norms is discharged at Cabaña river. This article shows an analysis of the main alternative carried out with the purpose to decontaminate waste liquor, as well as the description of a new process developed in the Nickel Research Center. [ABSTRACT FROM AUTHOR]