Monterey Mine No 1 Global Energy Monitor
Apr 30, 2021 Shay Mine No. 1 formerly Monterey Mine No. 1 is an underground mine 5 miles south of Carlinville, Illinois, using the longwall mining method. It was owned by Monterey Coal Company, a division of Exxon Coal USA, Inc. In 2009 ExxonMobil sold the mine to Macoupin Energy LLC, part of the Cline Group, which also owns Hillsboro Energy and has mines elsewhere in Illinois and West Virginia.