MAGAZINE №1(84) February 2018


CATEGORY  Industrial companies’ corporate logistics Sourcing


Mining companies are a special type of production enterprises, being somewhat "starting points" of material flows that pass through supply chains, gradually transforming into production and technical products and consumer goods for end customers. In this connection, the purchased resources refer exclusively to an auxiliary group of materials that are used to support mining processes and administrative and economic activities.

Therefore, the use of the integrated technology Lean Six Sigma (Lean Production + Six Sigma), while providing operational resources and services, should include solutions aimed at reducing activities that do not add value to the raw materials sold, increase the speed of processes, simultaneously increasing the level of logistics services.

The article shows that it is possible to solve these tasks through centralization of material flows, receiving wholesale discounts on consolidated orders, without increasing the period for providing the demand. In addition, based on the principles of queuing theory, assigning relative priorities to different procurement applications, it is possible to shorten the time to meet the needs of domestic consumers.

The calculations results provided in the article show that with a decrease in the time spent in the queue for the most important applications, the quality of the material and technical supply service improves. Also, when processing orders grouped according to the nomenclature of consumed resources, it is possible to lower the complexity of processing by reducing the variety of supplies and the number of offers from potential suppliers that need to be analyzed simultaneously.

 Electronic version


Published in Sourcing

MAGAZINE №2 (79) April 2017


CATEGORY  Industrial companies’ corporate logistics Inventory management Optimization and mathematical modelling


By controlling the various stock categories in real business, companies often have to take into account the large number of factors. It is necessary in order to provide these factors received as a result of parameters calculation, really make it possible to reduce costs and increase profits effectively. One such model involves the immobilization of accounting losses from the funds invested in stocks. Mining companies are the initial parts of the supply chain, which are the sources of origin of the material resources main flow. Material costs represent a significant share in the costs of raw materials produced, and most of them accounted for the purchase of consumables used in the production process. Therefore, operating resources require diverting significant amounts of funds from the mining companies turnover. Calculations were made taking into account various factors, reflecting the macroeconomic trends in Russian economy, such as inflation. To assess the opportunity costs, the statistics on bank deposits with fixed interest rates and interest capitalization was used. The potential savings evaluation was carried out using the economic order quantity model taking into account losses from the immobilization of capital into stocks. As a result of the calculations presented in the article, it is shown that taking into account losses from the capital immobilization into stocks and developing practical recommendations for optimizing the level of stock balance, may give significant cost savings and opportunities to increase profits. Released financial resources can be directed to the equipment modernization, which will help increase the return on assets and improve the productivity of mining companies work. 

 Electronic version



Postal address:

125 319  Chernуakhovskogo str.16

phone/fax (495) 771 32 58

Working with authors: Levina Tamara Vladimirovna

mob. 8-962-965-48-54