Shelling cut power to Makiivka's Severnaya mine, leading 55 mine workers to be evacuated, the mine's owner, Makeevugol, announced via its press service.
Previously, the deputy head of the Donetsk People's Republic (DPR) militia, Eduard Basurin said that more than 80 miners were trapped in the mine.
In mid-April, Kiev launched a military operation in the country's southeast, predominantly Russian-speaking region, after its residents refused to recognize the February coup's results. According to the UN, over 4,800 civilians were killed in the ensuing conflict.
A ceasefire agreement was reached during talks in Minsk on September 5, 2014 and a "silence regime" was proclaimed in the region on December 9 under OSCE mediation. Since January 9, the intensity of artillery shelling in the region has rebounded.