 WEST CHESTER, Ohio--BUSINESS WIRE--Barnes Aerospace, a business unit of Barnes Group Inc. NYSE: B, today announced the expansion of its Maintenance, Repair, and Overhaul MRO facility in West Chester, Ohio at a ribbon cutting ceremony to celebrate the occasion. The West Chester MRO operation specializes in a variety of critical machining functions and extensive inspection applications for the global aviation industry. While todays aerospace industry continues to be challenged in light 