765 ILCS 505/4
The expense of such examination and survey shall be paid by the plaintiff, but if the plaintiff recovers damages against the owner or operator of such mine for working the same upon the plaintiff's land, the plaintiff shall have the right to have such expenses added to the damages; provided, however, that in no event shall the cost of such examination and survey be taxed as costs if the owner of the mine or the lessee of the mine shall tender to the plaintiff before the survey is commenced, a sum of money which is equivalent to or greater than the amount of damages recovered by the plaintiff in such proceeding, and in no event shall the plaintiff be allowed as costs any amount of such examination and survey which is greater than the amount of actual damages allowed to the plaintiff in such proceeding.
765 ILCS 505/4