The incident took place at Jeetpur colliery, a subsidiary unit of the Steel Authority of India Limited (SAIL), at a time when 191 miners were inside the mines.
The miners were, however, rescued safely from the mines and the leak has been temporarily sealed.
"It was a minor problem. The gas leakage has been sealed timely and miners are safe now," K L S Rao, general manager of the colliery said.
Rao was part of the rescue team that rushed into the mine to seal the leakage.