Ky. Rev. Stat. § 381.940
In any instrument heretofore or hereafter executed purporting to sever the surface and mineral estates or to grant a mineral estate or to grant a right to extract minerals, which fails to state or describe in express and specific terms the method of coal extraction to be employed, or where said instrument contains language subordinating the surface estate to the mineral estate, it shall be held, in the absence of clear and convincing evidence to the contrary, that the intention of the parties to the instrument was that the coal be extracted only by the method or methods of commercial coal extraction commonly known to be in use in Kentucky in the area affected at the time the instrument was executed, and that the mineral estate be dominant to the surface estate only for the purposes of coal extraction by the method or methods of commercial coal extraction commonly known to be in use in Kentucky in the area affected at the time the instrument was executed.
KRS 381.940
Created 1984 Ky. Acts ch. 28, sec. 2, effective7/13/1984.