By Jack Kimball BOGOTA (Reuters) - Unknown assailants bombed the rail line of Colombia's largest coal exporter on Thursday, knocking 17 wagons off the rails, the Cerrejon coal company said. The latest attack comes only days after Cerrejon and its workers signed a wage deal to end a strike that had paralyzed exports for a month and cost the government millions of dollars in lost royalties.

Three coal trucks were torched on Sunday at Colombia's Cerrejon mine, where miners have been on strike for the last two weeks, according to the Swiss-British-Australian consortium running the site. The consortium said in a statement that three trucks had been completely burnt and another partially destroyed as a result of a bomb attack at the mine in the far north of the country, near the border with Venezuela.

BOGOTA, Feb 15 (Reuters) - Colombia's largest coal exporter, Cerrejon, and its striking union will meet on Friday for the first time since workers walked off the job last week, both sides said. Laborers at Cerrejon, a joint venture between BHP Billiton , Anglo American and Xstrata, went on strike on Feb. 7, the first walkout in two decades, after failing to reach an agreement over wages and compensation.

* Ban adds to mounting problems in Colombia's coal industry * Fenoco railway moves up to 160,000 tonnes of coal per day BOGOTA, Feb 9 (Reuters) - Colombia's top coal railway, Fenoco, will comply with a ban on nighttime trains issued by a regional environmental authority to reduce noise, the company said late on Friday. The announcement adds to problems that have forced top producers at the South American country to shut down shipments from the world's fourth-largest coal exporter, sending global prices rising.