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The deposit of salt is located in the northern part of the Legnica-Głogów Copper Region on the depth of 1000 m. The Polkowice-Sieroszowice Copper Mine has been carrying out mining works in the salt bed since 1991. In the workings driven from east to central part of the mine occur difficult thermal working conditions. The dry-bulb temperature is high and reaches 34--36C, wet-bulb temperature is moderate...
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