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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 m...

This paper addresses the problem of integrating circular economy (CE) principles into production planning processes in high-mix manufacturing environments. Although environmental indicators are increasingly monitored in industrial practice, their role in operational planning decisions remains limited. In many cases, data collection is not followed by its effective use in decision-making processes. The aim of the paper is to present an author-developed conceptual approach that enables the transition from monitoring...