The incident at the mine named after 50 years of the USSR in the Lugansk Region occurred late on October 28.
There has been no information about the miners' fate, the Donetsk rescue service said.
In another incident on October 28, 555 miners were urgently evacuated from a mine, also in the Lugansk Region, which had caught fire.
There were no victims in the incident, the rescue service said.
Source: RIA Novosti