Studies on Lignite Quality Depending on Storage Conditions Research on the Quality of the Soil and the Land Related to the Mining Perimeters in Valea Jiului Conceptualization and Quantitative Assessment of Risk Associated with Explosives Monitoring of the Deposit Displacements and the Settlement Behavior in Simionești Village Location, Cordun Commune, Neamţ County Analytical Tool for Modeling the Dispersion of Material Fragments Generated by Explosives Blasting Exploitation of the Polymetallic Antonio Ore Body, From Băița Plai Mine The Influence of the Exploitation of Mineral Deposits and Useful Rocks on the Environmental Components Analyzed in Sălaj County Analysis of the Influence of the Vertical Coaxiality of the Pillars on the Stability of the Resistance Structures, from the Ocnele Mari Saline