The condition of three contract workers, who were admitted to hospitals in Delhi after they were injured in a minor fire at the Mathura refinery in Uttar Pradesh, are improving, an official said.
The workers suffered burn injuries after a fire broke out in a sump when they were working on an effluent treatment plant on Tuesday, the official said, adding that a probe was on to find out the cause of the blaze.
Pop Singh, Giriraj and Geetam were admitted to two hospitals in Delhi, while a fourth person was discharged from a Mathura hospital on Thursday, said Renu Pathak, the assistant manager of corporate communications at the refinery.
The condition of the three workers are improving, she added.