Tag: Deepest Metro Ventilation Shaft

Kolkata: The country’s deepest underground rail ventilation shaft equal to a 15 storey building and an important part of the city’s East-West Metro line was completed on Monday, officials said. The ventilation shaft, which is 43.5m deep, was completed jointly by Kolkata Metro Rail Corporation (KMRC) and Afcons, a private engineering company. Such shafts are […]