136 FOREIGN TRADE ZONES of the owner of the free port, as is likewise direct supervision to see that goods for the exportation of which from the Kingdom certain special conditions are laid down are not thus improperly exported. Art. 2. In exercising the supervision discussed in article 1, it is the duty of the owner of the free port, whenever there is any question as to the disposition or removal of goods the right of which to importation or exportation may be con- sidered to be restricted as stated in the same article, to make a report as soon as possible to the customs service of the free port, upon the examination made by which it shall depend to what extent and under what conditions the person concerned may be allowed, according to the regulations in force, to keep or remove the goods or what measures must first be taken with regard to the goods according to the regulations. Arr. 3. With regard to supervision inside the free port to see that the rules in force for preventing the bringing in of contagious diseases into the Kingdom by ships, their passengers or crew or the men who unload them are being followed, what is said in articles 1 and 2 may be applied in the corresponding way. SECTION 28. PAYMENT IN ADVANCE The owner of the free port is entitled to collect in advance the charges for the use of buildings, storage rooms, or storage space inside the free port, or equipment therein, as well as premiums on insurance asked for and fees for such labor or other such assistance as the person handling the goods is granted by the owner of the free port. , SECTION 29. BOOKS KEPT BY THE OWNER OF THE FREE PORT The owner of the free port shall keep a complete set of books showing what he does in the free port. SECTION 30. SOJOURN WITHIN THE FREE PORT Article 1. The manager of the free port should see to it that persons who have been guilty of unlawful importation or exportation of goods or have carried on illicit retail trade inside the free port are not employed for performing labor or doing any other work inside the free port, and he may also, at the instigation of the chief of the customs service of the free port, forbid undependable persons to stay inside the free port. ART. 2. Members of the traffic force employed permanently or temporarily by the management of the free port shall wear special service badges which are approved by the chief of the customs service at the free port. ArT. 3. A person, who, in accordance with section 9, is accepted for per- Forming work for a lessee within the free port, shall, when at work, wear a special service badge approved by the chief of the customs service of the free port, which badge will be furnished by the management of the free port, and the service badge shall be returned by the lessee concerned when the wearer of it leaves hie employ. Art. 4. For admittance in general to the warehouses inside the free port or to other buildings or open spaces rented to individuals, special permits issued by the management of the free port shall be required of others than persons in the service of the authorities of the free port, but no hindrance or delay must be caused to the health authorities in the performance of their duties hv this, or to policemen engaged in the performance of their duties. ART. 5. Traders who are inside the free port are absolutely bound to respect the rules which the employees of the free port on duty there may find it necessary to issue with regard to supersivion.