Coal mine blast kills seven in Ukraine
The blast occurred on Monday night at the Severnaya mine in Makeyevka, about 15 km (9 miles) from the city of Donetsk, the emergencies ministry said.
Like those in other former Soviet republics, Ukraine's mining sector has been plagued by accidents often blamed on poor infrastructure and a failure to follow safety regulations.
(Writing by Steve Gutterman, editing by Elizabeth Piper)