Ohio Rev. Code § 1567.03: Prohibited acts.

No workman or other person shall knowingly injure a water gauge, barometer, thermometer, air course, brattice, equipment, or machinery, obstruct or throw open an airway, handle or disturb any part of the machinery of the hoisting engine of a mine, open a door of a mine and neglect to close it, endanger the mine or those working therein, disobey an order given in pursuance of law, or do a willful act which may endanger the lives and health of persons working therein, the security of a mine, or the machinery connected therewith.