Balodabazar-Bhatapara, Jan. 22 -- As many as six workers were killed and more than ten sustained critical burn injuries after a powerful explosion ripped through a sponge iron unit in Chhattisgarh's Balodabazar-Bhatapara district on Thursday morning.

The blast, reported from the Real Ispat sponge iron factory in Nipania village under Bhatapara Rural police station limits, triggered panic across the industrial belt and once again raised serious questions over workplace safety standards.

The blast occurred at the Real Ispat sponge iron plant in Nipania village under the Bhatapara Rural police station limits while routine operations were underway.

Eyewitnesses said the explosion was sudden and intense, sending flames and thick smoke billowi...