A blast at a coal mine in Colombia has killed 21 workers, less than four years after an explosion took the lives of 30 at the same La Preciosa mine in the northeast of the country. –JCL

The BBC:

An explosion at a coal mine in north-eastern Colombia has killed 21, officials say.

The blast at the La Preciosa mine in Sardinata is thought to have been caused by a gas build-up.

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

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