Ohio Revised Code Title XV. Conservation of Natural Resources § 1561.37

When a deputy mine inspector receives notice of the occurrence of a fatal or serious accident occurring at any mine in the deputy mine inspector's district, the deputy mine inspector shall go immediately to such mine, to investigate fully into the cause of the accident, and shall make a report thereon to the chief of the division of mineral resources management in writing. A copy of such report shall be mailed to the owner, operator, lessee, or agent of such mine. If the accident is of such a nature that the deputy mine inspector needs assistance, the deputy mine inspector may request the chief to attend or to assign additional deputy mine inspectors to assist the deputy mine inspector who requested assistance.