The GPA reserves the right to control the loading, unloading, and handling (hereinafter, in this Rule, collectively referred to as “handling”) of all cargo on premises and facilities under its control. No others will be allowed to perform such handling without special permission from the GPA. If such permission is granted, the charges to be assessed are those published in this MTOS, unless excepted by the GPA. When another party is permitted to handle cargo, the GPA will be paid by such party for use of its facilities and any equipment, labor, or materials provided at the rate(s) to be named, depending upon the commodity handled and conditions pertaining hereto.