Hooghly River in Calcutta, Asia's first underwater CESC Tunnel electric power transmission, Silver Medal, (1930 -31), Engineer name Harley Hugh Dalrymple-Hay, awarded to Karam Singh Sirdar (laborers), Constructors Company name John Cochrane & Sons Limited, 30.91grams, Very Fine, Very Rare. Note: This medal was reportedly issued to the families of workers who died during construction. Karam Singh Sirdar (name not found in list) was one of the two Indian laborers who lost their lives on the project.