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On the territory of Romania, there are large salt deposits grouped on either side of the Carpathian mountains. Made up of over 300 large salt deposits covering an area of about 30,000 km2. The Trotus mine within the Targu Ocna Saltworks Branch was opened and put into operation in 1971, with the objective of dry salt exploitation, using the mining method with small chambers and abandoned square pillars, with a vaulted ceiling. Currently, Salina Trotu? has 14 horizons: 2 at the level of the Pilot mine and 12 at the ...

The main role of ventilation systems and especially air conditioning systems is to create indoor conditions and air quality inside the rooms that are independent of external atmospheric influences. The sizing of ventilation systems and especially of air conditioning systems is done, in most cases, by considering the climatic elements as a basis for calculation. The real limit to air quality insurance it consists in maintaining in the air certain concentrations of harmful substances which do not endanger human heal...