Colombia’s coal http://latino.foxnews.com/latino/politics/2015/03/04/colombia-looks-to-maintain-oil-coal-gold-output-despite-lower-prices/ http://www.reuters.com/article/2015/02/24/coal-colombia-idUSL1N0VY32V20150224 http://www.bloomberg.com/news/articles/2015-02-19/colombia-coal-railway-takes-legal-action-as-ban-threatens-output