When you evaluate contractors on the basis of cost alone, you are unlikely to end up with the best-qualified firm, and you put the sculpture at great risk. If you are unable to obtain an exception to the sealed-bid method, be sure that the project specifications are clear and detailed and describe every aspect of the work involved. Require a list of all projects completed within the past several years. Ask each bidder to describe the qualifications of all personnel who will be involved in the project, not just the principals. Although these factors will not be evaluated in the sealed-bid process, it helps to remind bidders.