UPDATE 1-Drummond says sustaining Colombia coal exports despite railway ban
March 17, 2015 at 16:39 PM EDT
BOGOTA, March 17 (Reuters) - Colombia's second-biggest coal miner, U.S.-headquartered Drummond, is sustaining regular exports despite new restrictions on using the Andean country's main coal railway and has ample stocks for now, a company executive said.
