A hard hat belonging to an I-35 W bridge crew member. It has "stretch and flex" exercises pasted on it. Workers begin their day doing calisthenics.
                                            (Marc Sanchez)

Hot Beams, Cold Air

A hard hat belonging to an I-35 W bridge crew member. It has "stretch and flex" exercises pasted on it. Workers begin their day doing calisthenics.

Credit: Marc Sanchez