Blockades Force One of Latin America’s Biggest Coal Mines to Halt

COLOMBIA · BUSINESS

A protest on a single stretch of railway has done what little else could: brought one of Latin America’s largest coal operations to a complete stop, with thousands of jobs frozen overnight.

Why the coal mine stopped

Cerrejón, operator of one of the largest thermal-coal mines in Latin America, announced that from June 1 it would suspend its mining, rail and port operations in the northern department of La Guajira. The trigger was a blockade in place since May 23, led by representatives of a local community association, which the company says cut off the supply of essential goods — including the fuel that runs its machinery — and halted both coal shipments to port and production at the mine itself. Cerrejón classified the situation as a force majeure event, the legal term for circumstances beyond its control.

The rail corridor is the critical link in the business: coal leaves by train for the port to be exported, and supplies come in the same way. When the train stops, the whole operation quickly runs out of room to maneuver.

Thousands of contracts frozen

The most immediate impact falls on the workforce. Cerrejón said the majority of its labor contracts — affecting more than 12,000 people, by some counts — would be temporarily suspended for as long as the situation lasts. Only staff considered essential for the care and maintenance of the installations will keep working. The company added that it would continue to carry out required social measures and maintain the mandatory environmental controls for its activity during the stoppage.

A pattern of disruption

This is not an isolated episode. Cerrejón said it has faced around 80 blockades so far in 2026 — across roughly 150 days of the year — with rail activity the most frequently affected. The company stated that most of these actions are unrelated to its own operations. The broader context is a national one: a transport federation reported hundreds of blockades on Colombia’s main and secondary road corridors in the first four months of the year, a sign of how readily protest movements turn to physical obstruction.

What it means for La Guajira

La Guajira is one of Colombia’s departments most dependent on mining, and Cerrejón is among its main economic engines. A prolonged interruption reaches well beyond the company, hitting contractors, suppliers and the wider regional economy. Cerrejón renewed its call for “constructive dialogue” to end the blockades, warning that the longer they persist, the greater the damage to employment, regional development and economic stability in La Guajira and Colombia. For now, the timeline for any resumption depends on a negotiation that, as of the shutdown, had no clear end in sight.