.... In addition. the Calcutta is also an industrial city which manufactures Engineering goods. Electrical goods. Jute products and Chemicals. Inland goods traffic to and fran Calcutta is catered by the networlt of road and rail system.1he city also iI!1ports and exports throUAAits port. Three main ccxnmodities...

... and opened to rail traffic in 1869. Today it forms part of the London Transport Underground Railway System (Fig. 1). The tunnel was constructed using a rectangular shield and was lined with brick. Apart from the approaches it is still in its original form today. Much of London's main line railway system...

... produced water discharge Stockholm water management public utility wastewater waste management inspection pipe conflict cable isgard soft ground utilization traffic solid waste underground Rock Tunnel construction underground system Sweden Treatment Plant tunnel water...