Colombian coal miners killed in 'gas explosion' (BBC)

[eppur_se_muova]

At least five miners have been killed and many others are missing following an explosion at a coal mine in north-east Colombia, an official says.

Rescue teams were searching the La Preciosa mine in Sardinata for survivors following the blast, which was blamed on a build-up of gases.

Early reports said about 30 miners had been underground, but the mayor later said at least 13 were trapped.

In February 2007 a gas explosion at the same mine killed more than 30 workers.

After that blast, authorities said they would step up their supervision of Colombia's mines.
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more: http://www.bbc.co.uk/news/world-latin-america-12289344