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The use of coal resources has contributed to the economy of Jiu Valley over a long period of time. Considering the long-term role of coal, many experts believe that the coal-based energy is sustainable, ensures energy security, and may become a growth factor in the area. The knowledge and technologies improvement for coal extracting from the Jiu Valley mining basin, where many mines were closed due to lack non-performing loans and lack of profitability, represents a first step in the sustainable rehabilitation of ...