ECSC - FINES - CALCULATION - CRITERIA - MODIFICATION IN THE LIGHT OF CIRCUMSTANCES - PERMISSIBILITY APPLICATION FOR THE ADOPTION OF INTERIM MEASURES - SUSPENSION OF OPERATION - SUSPENSION OF OPERATION OF A DECISION IMPOSING A FINE UNDER THE ECSC TREATY - POWERS OF THE COURT WHEN CONSIDERING THE ADOPTION OF INTERIM MEASURES ( ECSC TREATY , ART . 39 )