35 ILCS 200/10-175: Undeveloped coal.

All undeveloped coal in property on which there has been no mining during the year immediately preceding the assessment date shall for the purposes of this Code have an undeveloped coal reserve economic value of no more than $75 per acre. There shall be no per acre undeveloped coal reserve economic value for persons not in the business of mining who have not severed the coal from the land by deed or lease.