PROHIBITION AGAINST FLAMMABLE LIQUIDS AND GASES. The Licensee shall not without the prior written consent of the Licensor put up or operate any engine or motor or machinery in the Facility or use oils, burning fluids, camphene, liquid oxygen, ethylene, propane, kerosene, naphtha, gasoline, or other flammable gases for either mechanical or other purposes or any other agent other than gas or electricity for illuminating the Facility. Said prohibition against the use of oils, gases, and gasoline will not apply to the use of fork lifts, motor drive vehicles, cranes, etc., necessary for the installation and removal of exhibits in the Facility, but shall apply to the operation of any exhibit in the Authorized Area. Where any automobiles, trucks, or gasoline engines are to remain in the Facility during any portion of the License Period, the Licensee shall take the following precautions:
