Cesar, Colombia
- Drummond Company (USA) - Wikipedia 149928
- Amazon Nations Reject Colombia's Call to End Oil Extraction, Fail to Agree on Deforestation Goal - CD 09.08.23 365682
- Colombian environmental protestors 'see off' one of the world's biggest gold mining companies - Ecologist 06/17 149929
- The Dark side of coal. Paramilitary Violence in the Mining Region of Cesar, Colombia - pax - June 2014 149930