This paper presents some results of the researches regarding the landslides produced in the rock dump Bujorăscu Valley, administrated by National Society of Lignite Oltenia. The paper analyses the geotechnical characteristics of the rocks and water influence on them. It was found that, as a result of water infiltration in the waste dump's body, rocks resistance is considerably reduced and appears areas with high plasticity and sliding surfaces. From the statistic data processing there were established the values of the internal friction angle which makes the dump stable. In the end of the paper work are presented solutions for increasing the dumps stability and for ecological rehabilitation of the areas affected by landslides.

Ecological restoration and reuse of degraded lands must contribute to the region's sustainable development. Therefore, in order to determine the post degradation land destination, a number of opportunities and restrictions should be taken into account. For this reason, it is necessary to develop a methodology for establishing the optimal reuse alternative, which should be based on scientific principles, without neglecting economic issues and those related to population requirements. For this purpose the paper is focused on several aspects regarding the restrictions that must be considered in the decision-making process, related to the attraction or dislike of the territory for different ecological restoration options (regional climate, regional topography, ecosystems and land uses, environmental risks, quality indicators of the land etc.). Thus, we developed a methodology for determining the optimal type of land rehabilitation that takes into account a number of factors and indicators and can be applied in all situations, regardless of the form or level of degradation.

The aim of the paper is to make an x-ray of the potential of biological waste collection for the production of biofuels and fertilizers in Romania. It presents the existing legislative framework on bio-waste management as well as recycling technologies. A case study on the evaluation of the potential for selective collection of bio-waste for its anaerobic digestion is described.

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The mining basin of Oltenia comprises several development sub-areas of Gorj County. Development policies are the directions and principles of action that local public authorities draw in a number of key sectors. Determining sustainable development indicators for urban and rural areas will lead to the identification of development solutions for the Oltenia mining basin. The paper aims to identify the weaknesses by determining the human development indicators in the urban and rural areas affected by the restructuring of the mining industry.