Szukana fraza: [Abstrakt = "The paper presents a preliminary design of a knowledge base to support the selection of equipment for the planned mining works in hard coal mines. After introduction into ideas and scope of the mining production planning, the conception of an advisory system supporting planning of openings and exploitation works in coal mines is described. Moreover,the preliminary results of development work on the current version of the knowledge base are presented and further directions of development works are given as well"]

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