Six companies have been short-listed to receive the Prime General Contractor scope of work bid package for construction activities at the 1 million square foot MGM National Harbor. The original list included 25 candidates for the Prime General Contractor.The prequalified firms have until May 5, 2014, to submit questions in writing. Proposals are due on May 16, 2014 at 5:00 p.m.The six prequalified firms are: