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A man opens a locker and a places a hard hat on his head. He removes his glasses and puts on his safety glasses. He removes his jewelry and watch. A man walking along an elevated walkway on the grounds of a factory. Rock pouring into a truck. A man pulling on a rope as rock falls in front of him. Close up of glasses in the man’s pocket. A physician looking into his eye. A man walking down a ladder. Two men move the ladder. A man pressing buttons to move large cylindrical objects. He speaks to a co-worker and the object drops.