1 . ECSC - PRINCIPLES - FREE MOVEMENT OF PRODUCTS - EXTENT - PRODUCTS ORIGINATING IN NON-MEMBER COUNTRIES AND RELEASED INTO FREE CIRCULATION IN A MEMBER STATE - INCLUSION ( ECSC TREATY , ART . 4 ( A )) 2 . ECSC - PRINCIPLES - FREE MOVEMENT OF PRODUCTS - LIMITATIONS ( ECSC TREATY , ART . 4 ( A )) 3 . ECSC - COMMERCIAL POLICY - IMPORTATION OF COAL ADVERSELY AFFECTING COMMUNITY PRODUCTION - POWERS OF THE HIGH AUTHORITY - DEPARTURE FROM THE PRINCIPLE OF THE FREE MOVEMENT OF PRODUCTS - WHETHER PERMISSIBLE ( ECSC TREATY , ART . 4 ( A ) AND SUBPARAGRAPH ( 3 ) OF FIRST PARAGRAPH OF ART . 74 ; RECOMMENDATIONS OF THE HIGH AUTHORITY OF 28 JANUARY 1959 AND 30 OCTOBER 1962 ) 4 . ECSC - COMMERCIAL POLICY - IMPORTATION OF COAL ADVERSELY AFFECTING COMMUNITY PRODUCTION - RECOMMENDATION OF THE HIGH AUTHORITY PROPOSING THAT A MEMBER STATE SHOULD INTRODUCE CUSTOMS DUTIES - VALIDITY - DURATION - EFFECTS ( ECSC TREATY , ART . 4 ( A ) AND SUBPARAGRAPH ( 3 ) OF FIRST PARAGRAPH OF ART . 74 ; RECOMMENDATION OF THE HIGH AUTHORITY OF 28 JANUARY 1959 )