Total coal exports, however, fell 13.1% in the quarter, from 17.4 million tons in the first quarter of 2013 to 15.1 million tonnes in the same period this year.
Drummond Mining News
Local media is reporting the miner is hours away from resuming its coal shipments at its Cienaga port.
The US-based miner Cienaga port, on the Caribbean Sea, is set to handle an extra 3 million tonnes of coal a year.
Coal shipments now account for 12% of the country's total exports, second to oil, and on top of the nation’s better known exports, such as coffee and bananas.
The Colombian government says Drummond is one of the country's biggest polluters.
Sector blames delays in environmental approvals and decreased demand of commodities from overseas.
Analysts say the decision to put a stop to Drummond's exports is an economical "hara-kiri" for Colombia.
The company won't be allowed to continue loading until it completes its direct-to-vessel loading system.
The company is not in compliance with new rules which require miners to implement a direct-to-vessel loading system.
It has extended Drummond port improvement deadline, but it will charge the company daily fines.
Company offered 5% pay hike; union wants 9%.