Iowa StatutesCHAPTER 72 - DUTIES RELATING TO PUBLIC CONTRACTS72.1 - CONTRACTS FOR EXCESS EXPENDITURES -- EXCEPTION FOR COAL.72.2 - EXECUTIVE COUNCIL MAY AUTHORIZE INDEBTEDNESS.72.3 - DIVULGING CONTENTS OF SEALED BIDS.72.4 - PENALTY.72.5 - LIFE CYCLE COST.