The presence of a process of continuous reduction in the cost of production is one of the key conditions for ensuring the viability of an enterprise in a market economy. In the Railway Transport Department of JSC Uralasbest the reduction in the cost of production is one of the main functions of engineering and technical workers. As part of the given function, engineering and technical workers develop and implement the activities on the improvement of the key indices of mining equipment industrial exploitation system. The article presents the result, obtained by the workers of the Railway Transport Department on the solution of the problem of complex reduction of the quantity of failures of wheel-motor blocks of locomotive units. The complexity of the solution consists in the simultaneous reduction of negative influence of the factors of the two main subsystems of mining equipment industrial exploitation – the systems of engineering application and the systems of repair service.