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The gravel pits are exploitations to extract granular materials, sand and gravel in the alluvial river areas. Excavated voids are not very deep, unlike quarries and generally result in flooded areas. The company building materials in Holguin province has concessioned four deposit and within a gravel pit. The areas damaged by the exploitation of construction materials in the territory occupy about 75 ha, which causes a strong impact on the environment. For this reason it is proposed to develop a procedure to recover the deposit mined area in the gravel - sand Rio Sagua de Holguín as to achieve responsible mining. With the application of scientific methods analyzed the factors influencing the choice of recovery uses the mined area in the study area and developed a procedure consisting of five main stages. With the development of the procedure was shown that it can improve the social and environmental quality in the area affected by the mining activity [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]

The exploitation of sand and cruhed stone deposit, establish special problem for the characteristic of the natural environment where it is done. The prejudice for protecting the environment, joined to the legislation does that the mining activity should be done with a rational project that observe previosly the recovering of the affected ground according with the existing ecosystems. This paper presents an evaluation of the environmental impact that carries out the exploitation of fluvial deposit with sand and crushed stone, located into the limits of Alejandro de Humboldt park, both and the prevent measurement that will have to adopt themselves for minimizing the impact over the environment in order to resemble the exploitation and the protection of natural environment. [ABSTRACT FROM AUTHOR]