"12 labourers sustained burn injuries after molten iron fell on them following a blast at Pragati Industries in Urla industrial area, around 15 km from here," Senior Superintendent of Police (SSP) Deepanshu Kabra told PTI/Bhasha.
The seriously injured have been admitted to a hospital in Bhilai, he said, adding they belonged to Bihar and Uttar Pradesh.
Kabra said around 36 labourers were working at the factory at the time of the mishap. "The blast occurred at the furnace due to air pressure, which threw the molten iron on the workers," he said.
Some of the injured workers are being treated at Kalda Burn Centre here, the SSP said.
A case has been registered against the company in this connection, Kabra said.