A lasher employee was injured by a fallen lasher rod that was approximately 8-10 feet in length and 1 1/2 inches in diameter. A second lasher employee was removing a container lasher rod on a top tier rack about 20 feet above ground level on a cargo vessel while the injured employee was working on the middle rack approximately 10 feet below the second lasher employee. The lasher rod popped out of the container corner casting and the second employee's hand and fell striking the injured employee on the left eyebrow and causing a laceration. Afterwards, the employee lost consciousness and was hospitalized.