- Some Amgachi, Pokaria residents showing change of heart, claims Dumka deputy commissioner AMIT GUPTA Ranchi, Sept. 30: Calcutta Electric Supply Company (CESC), which recently organised a visit for some Dumka villagers to its Budge Budge plant in Bengal, is hoping that the trip will help clear misconceptions and ultimately pave the way for local residents to tone down their strident opposition to the company