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# العنوان سنة البحث
631 Contribution to the analytic study for the determination of the optimum size of pillars in Room- and - pillar mining method 1983
632 Determination of the rock deformation in the roof of mining stopes 1983
633 The relation between the reduction ratio , the hardness and coefficent of plasticity of rocks 1983
634 A Study on the relation between some physical mechanical properties of rocks and their drillability 1983
635 Relation between surface area products in the process of comminution , time of grinding at constant Ball to ore ratios , for different types of tested rocks 1983
636 A rapid practical method for determing the displacement of the roof and the parameters of timber supports in the mine stopes 1983
637 Effect of hardness and coeff of plasticty as technological properties on the produced surface area as an index for energy consumed in the process of comminution 1983
638 Application of the probability theory for determining the effect of hardness of rocks on the statistical parameters of size distribution for different ball to ore ratios at constant time of grinding 1982
639 Stress concentration around single and intersecting inclined mine openings: A comparative study 1982
640 Relation between confining pressure and drillability of rocks 1982