Peabody Energy’s North Antelope Rochelle mine (NARM), the nation’s top producing operation and its flagship complex in the southern Powder River Basin of Wyoming, has shipped its 2 billionth ton of coal. The company said January 20 that the new marker represents more than 83 million man-hours and the loading of 17 million train cars and more than 125,000 trains.

NARM met its first billion-ton milestone in 2006, 23 years after first coal was taken from the mine. Peabody officials pointed out that, if the complex were a nation, it would place near the top 10 countries globally for coal production.