Peabody Energy will permanently close the Wildcat Hills coal mine in southern Illinois and a nearby coal-processing plant late this year, according to the AP. The closure of the mine Willow Lake preparation plant will affect 225 workers.

Peabody Energy said the mine and processing center at Arclar Complex in Saline County will cease production December 14 due to “uneconomic mining conditions,” as reported by the AP.

The Southern Illinoisan reported that the closures and job losses are expected to be permanent. Peabody Energy said it will work with employees interested in seeking positions at the company’s other operations in the Midwest.