At 250 metres underground, the dust is thick and oxygen is in short supply at the Mramor mine in northeastern Bosnia. The facility is the largest underground mine in the country, but its future prospects -- along mines across the country -- is all but settled, as the Balkan nation prepares to decarbonise the country by 2050. Until then, mining continues to be done the old fashioned way in Mramor -- with picks, shovels and dynamite. IMAGES AND SOUNDBITES