The Cerrejon mine is owned by London-listed Anglo American, BHP Billiton and Xstrata.
The National Union of the Coal Industry, SINTRACARBON, brings to local, national and international attention the attack by the contracting firm, SOTRANS, on the labour rights of its workers, simply because they have had the audacity to unionize as a means of gaining certain fundamental rights enshrined in ILO strategic objectives. This includes the right of free association, freedom to unionize and the right to collective bargaining as outlined in ILO agreements 87 and 98, ratified by Colombia.
See http://www.minesandcommunities.org/article.php?a=9353.