++++ 1 . MEASURES ADOPTED BY AN INSTITUTION - DECISIONS OF THE HIGH AUTHORITY - STATEMENT OF REASONS - PREPATORY INQUIRIES - IRRELEVANT OBJECTIONS - UNCERTAINTIES DUE TO APPLICANT'S OWN CONDUCT ( ECSC TREATY, ARTICLE 15 ) 2 . ASSESSMENT TO CONTRIBUTION - ESTIMATED ASSESSMENT - POWERS OF THE HIGH AUTHORITY ( DECISION NO 13/58 OF THE HIGH AUTHORITY OF 24 JULY 1958, ARTICLE 2; OFFICIAL JOURNAL 1958, P.269 DECISION NO 16/58 OF THE HIGH AUTHORITY OF 24 JULY 1958, ARTICLE 15; OFFICIAL JOURNAL 1958, P . 275 )