Brief description and purpose of the project

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Execution of Operations for the N3 Line (Third Line) and G4 Line (Fourth Line) Stations at Shohada Square in Mashhad using the rib and pile method at a depth of 30 meters below the groundwater level
Complete execution of access galleries, advance galleries for the shaft, and patrol tunnels, including tunnel excavation, construction of retaining structures, and execution of lining and main structures. Construction of supplementary accesses for stations, ticket hall, train platform, etc