The problem of optimization of design and operational parameters of loading-transport complexes with reference to conditions of OAO Bor open pit on the basis of statistical testing method is considered. The method allows modeling and optimizing the parameters of loading-transport complexes, increasing the level of organization of production processes, operative control of technological characteristics of loading and transport equipment with regard to the changes in the operating capacity of equipment, as well as mining and technical factors of individual faces and the open pit as a whole.