Esad Civic, manager at the Raspotocje mine in Zenica said 56 miners were in that mine and 22 made it back to the surface, adding, "We are communicating with them. They are doing well and have enough clean air to wait for the arrival of rescue teams."
Two miners were hurt in the blast and taken to the hospital.
The regional prime minister, Nermin Niksic said "The rescuers are deploying superhuman efforts to save their comrades. We have just spoken with them. They confirmed they are all together and doing well."
No other major damage was reported in the quake.