Sept 10 (Reuters) - U.S. Department of the Interior:
SAYS IT HAS APPROVED A MINING PLAN CHANGE FOR THE BLACK BUTTE MINE IN SWEETWATER COUNTY, WYOMING
SAYS CHANGE ALLOWS BLACK BUTTE COAL COMPANY TO RECOVER ABOUT 9.2 MILLION TONS OF FEDERAL COAL IN TWO NEW AREAS, KNOWN AS PIT 15 AND PIT 10
SAYS WITH THIS APPROVAL, THE MINE IS EXPECTED TO CONTINUE OPERATING THROUGH AT LEAST 2039