POWDER RIVER BASIN: Wyo., Mont. coal producers face new South Korean tax Published: Thursday, July 10, 2014 Coal producers in the Powder River Basin are facing a new tax from South Korea, a major importer of American coal. Please subscribe to Greenwire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.