Scholarly record
ANALYSIS OF THE LEVEL OF ADDED VALUE WITHIN THE EXPLOITATION PROCESSES IN AN UNDERGROUND MINE WITH A LONGWALL SYSTEM AND METHODS OF INCREASING IT USING THE LEAN MINING CONCEPT
Abstract
The article presents the results of a statistically robust analysis of the level of value added (VA) achieved in terms of shift utilization in an underground mine operating a longwall system, with particular emphasis on long runs. It also identifies rules, methods and tools for increasing this value, using the Lean Mining methodology in this context. The final section of the article estimates the level of value added and its potential increase using the proposed improvements in an exemplary underground hard coal mine in Poland. The results of the study indicate the significant role of transport processes in the overall mining process, including the utilization of working time. Ultimately, an appropriate, optimized system for organizing logistics activities and the mining operations themselves was proposed. It was demonstrated that the potential increase in value added can be not only economic but also environmental, contributing to the development of the concept of sustainable development.
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