Four workers were injured in an explosion at a steel mill in Rasulpur area of Fatullah in Narayanganj district on Wednesday.
The injured were identified as Mizan, 40, Sumon, 33, Milon, 35, and Ujjal, 32.
The explosion occurred in the afternoon at China Steel Mill when the boiler of the mill exploded with a big bang, leaving four people injured.
The injured were taken to the National Institute of Burn and Plastic Surgery, said Dr Shaon Bin Rahman, resident physician at the institute.
“All of them are now out of danger and under observation,” he said.