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Abstract
Methane is formed in the nature in result of oxygen-free decomposition of organic matter: — It is a constituent of natural gas, — It occurs together with oil, — It occur in hard coal deposits. In mines, methane is accompanying the hard coal exploitation. If not drained, methane is emitted to ventilation air forming methane-air mixtures of various methane concentration and then it is emitted to the atmosphere. Methane explosions always accompanied mining works killing many workers. However, recently the methane from coal beds is used as the fuel for various power making installation. Utilization of methane from coal beds is very important because of various reasons: — Economic reasons, what is concerned in Mining Law classifying methane from coal beds (MPW) as basic useful minerals. — Ecological reasons, because emission of the methane into atmosphere results in greenhouse effect, what was mentioned in Kioto protocol. Development of the underground methane draining is observed in Polish mines from many years, including economic use of obtained methane in heat-power making installations. However, utilization and economic use of methane from mine ventilation air is made not only in Polish but also worldwide mining.
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