Evraz and Raspadskaya resumed underground mining in Siberia halted after a 6.6-magnitude earthquake in a nearby region late Tuesday.
Evraz's coal and iron ore mines began operations at 5 p.m. local time, the press office said. Miners returned after the Emergency Ministry ruled the area was safe, a Raspadskaya spokeswoman said.
Mechel is now running all mines as normal, spokesman Dmitry Kuchumov said. Underground mines in Kemerovo were closed on the ministry's recommendation while officials inspected them.
The ministry has since cleared them to open. SUEK said it suspended operations after Kemerovo Governor Aman Tuleyev ordered the safety check.