A coal miner works over 3,600 feet below the surface of the earth at Scheglovka Glubokaya mine on March 3, 2015 in Makeevka, Ukraine.
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Why Ukraine's mines are so dangerous - In 90 seconds

A suspected gas blast at a coal mine in a rebel-held region of east Ukraine is believed to have killed some 30 miners.

It's the latest in a string of mining disasters to hit the country.

But why are Ukraine's mines so dangerous? BBC News explains, in 90 seconds.

Video produced by Mohamed Madi

  • 04 Mar 2015
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