Holding of Prebid Conferences to Enable Contractors to Prosecute Infrastructure Projects with Efficiency. Category: Department OrderSub Category: contracts-contractorsSeries: 1974No: 15File: DO_015_S1974.pdfDate: Thursday, June 13, 1974Tags: Prebid Conferences Contractors Prosecute Infrastructure Projects 015 Read more about Holding of Prebid Conferences to Enable Contractors to Prosecute Infrastructure Projects with Efficiency.