Ohio Rev. Code § 1311.23: Lien upon mines for labor.

A person who performs labor or work in mining coal or removing it from the mines, or other labor or work connected therewith, for a coal or mining company or corporation owning, operating, or leasing coal mines within this state, by virtue of a contract with the company or corporation or its authorized agent, has a lien to secure payment therefor upon the mine thereof, on all its rights as the owner or lessee of the mines, and on all its personal property used in conducting the business of mining coal, whether located at or near the mines or elsewhere.