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Collecting Derivation Osina - Tunnel No. 5

1999 - 2000

Water from the river valley of Osina River are transferred into Dospat Dam by using the Collection Derivation Osina. The tunnel is law-pressure one with a cross section lower than the least necessary for mining works. This called for non-traditional building methods. Excavation works and transportation of the
rocky material were carried out by using BOBCAT 751 S.