Correction: Coal Mine Expansion story
BILLINGS, Mont. — In a Dec. 22 story about a Montana coal mine, The Associated Press, relying on incorrect information from the U.S. Interior Department, reported erroneously that the department approved an expansion of the mine. Spokeswoman Heather Swift now says the department is drafting a study of the expansion that could be approved later.
A corrected version of the story is below:
US studying 60-million-ton expansion of Montana coal mine
The Interior Department is studying a 60-million-ton expansion of a southeastern Montana coal mine that serves one of the largest power plants in the western United States


