Ukraine's coal miners dig deep to power a nation at war.

Deep underground in southeastern Ukraine, miners work around the clock extracting coal to power the country's war effort and provide civilians with light and heat.

Coal is central to meeting Ukraine's energy needs following the Russian military's campaign to destroy power stations and other infrastructure, the chief engineer of a mining company in Dnipropetrovsk province said.

Elevators carry the company's workers underground to the depths of the mine. From there, they operate heavy machinery that digs out the coal and moves it...