More than 500 people turned out for a job fair set up by the mayor's office, the Marlborough Economic Development Corporation, and Quinsigamond Community College, according to city officials. The free event connected job hunters with more than 30 prospective employers. “Our goal is to get Marlborough residents back to work with local companies, and I look forward to hearing about some of the success stories that come from this initiative,” Mayor Arthur Vigeant said in a statement on the June 13 gathering.