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Steve Griffin | Tribune file photo Dave Mark uses a sander to abrade the surface of a horizontal stabilizer fora Boeing 787 Dre Steve Griffin | The Salt Lake Tribune Employees cheer the completion of the first all Utah built 787-9 horizontal stabilizer (t Steve Griffin | The Salt Lake Tribune With Boeing's first all Utah built 787-9 horizontal stabilizer (tail) in the background e Steve Griffin | Tribune file photo A completed horizontal stabilizer for a Boeing 787 Dreamliner at Boeing in Salt Lake City, Steve Griffin | The Salt Lake Tribune Employees gather to celebrate the completion of the first all Utah built 787-9 horizontal Steve Griffin | The Salt Lake Tribune With Boeing's first all Utah built 787-9 horizontal stabilizer (tail) in the background S Steve Griffin | The Salt Lake Tribune Employees cheer the completion of the first all Utah built 787-9 horizontal stabilizer (t Steve Griffin | Tribune file photo Mechanics work on a vertical fin assembly for a Boeing 787 Dreamliner at Boeing in Salt Lake Steve Griffin | Tribune file photo A poster with employees signatures hangs above the vertical fin assembly line for a Boeing Steve Griffin | Tribune file photo Mechanics work on a horizontal stabilizer for a Boeing 787 Dreamliner at Boeing in Salt Lake Steve Griffin | The Salt Lake Tribune With Boeing's first all Utah built 787-9 horizontal stabilizer (tail) in the background B Steve Griffin | Tribune file photo Mechanics work on a horizontal stabilizer for a Boeing 787 Dreamliner at Boeing in Salt Lake