The fundamental impetus for the creation of this work is the idea to explore by systematic work the possibility of improving the utilization of dimension stone deposits using modern technical and technological achievements. Dimension stone is a highly valuable mineral raw material per unit of product. From the past experiences and literature it is known that for a certain quantity of commercial blocks, dimension stone should be dug (cut) out in significantly larger volume of natural (raw) rock mass. Stone residue, resulting in gaining the commercial dimension stone blocks, is usually of less value per unit of product. This paper is a credible analysis of investment profitability in the mining operation - exploitation of dimension stone. Through the analytical methods a model has been created for determining the profitability threshold of a business subject performing the dimension stone deposit exploitation when the maximal gross rock volume and price per unit are known. Establishing the relationship between the minimum quantity of blocks to be obtained from the total volume, to make the business profitable, and the total volume from which this minimum quantity of blocks is obtained gives us the utilization coefficient at which the business will be on the margin of profitability. Profitability of dimension stone exploitation in a deposit is directly dependent on the rock utilization coefficient. It is therefore a priority task and a challenge to improve the efficiency of dimension stone deposits utilization and to reduce the accumulation of mineral residue and ultimately increase profit. Adjustment of mining operations to conditions prevailing in the deposit, i.e. adjustment of mining activities to natural discontinuities is essential and is necessary if we are to dig up the maximum possible number of commercial blocks in a dimension stone deposit. Further improvement of efficiency can only be achieved by human activities on a rock in natural conditions. In the paper, based on familiar experiences and scientific knowledge, an idea is developed and basic concepts are offered for the process of connection the rock mass under natural conditions by injecting epoxy paste and consolidation of non-commercial dimension stone piece after their excavation out of the deposit. To better understand and study of real problems in the application of block consolidating method after excavating blocks out of the deposit and connecting fractured rocks under natural conditions in order to improve the dimension stone deposit utilization coefficient, the method of simulation modeling was applied. In situ consolidation probes of noncommercial dimension stone piece after excavation from the deposits, which was carried out directly on the dimension stone deposit, showed that the connective component epoxy paste can successfully bond two completely separate pieces of stone to get commercial block. Paper is discussing detailed preparatory work leading up to the highly complex and demanding in situ probes of injecting epoxy past (bonding resins) in the natural rock mass. An engineeringgeological model was made of the deposit where the in situ probe was performed of injecting the epoxy paste into the natural rock, as well as a 3-D model of the discontinuity position on the test model was made with the purpose of successful injection. The geological structure, genesis and tectonics of the deposit were studied and features of natural rock conditions have been determined which together with the characteristics of rock mass discontinuities are determining the natural conditions. For the in situ tests important features of discontinuities were determined, such as the orientation of discontinuities, their spacing, persistence, roughness, and yawn and discontinuity fillings. The features of epoxy paste are shown as well. All fissure systems are recorded and calculation of the required amount of epoxy paste to perform in situ injection test was made. Packer is designed for injecting the epoxy paste and by applying the known scientific theories and practical experience drilling technique, diameter and depth of the injection wells and injection technology itself were selected. Field results of the in situ tests of dimension stone blocks consolidation and results of in situ tests of connecting the fractured rocks by injecting epoxy paste in the natural rock mass were verified by laboratory tests. Verification of the applied methods and the results is confirmed on a real example and measurable results of dimension stone deposit utilization increasing after consolidating the fragmented rock after exploitation were obtained.