VARANASI, Nov. 25 -- Three workers died of suffocation, while another labourer was hospitalised, on Monday after allegedly inhaling toxic fumes inside a tank at a carpet dyeing unit here, an official said. The incident occurred at the Surya Carpet plant, located in Ugapur area, under the Aurai police station limits, when workers were carrying out cleaning and repairs inside a tank in the dyeing unit, police said. P2...