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Dear CHAS Members: A water hammer (lecture demonstration device) broke this month when lowered, sending glass flying in my classroom. The water hammer is designed to make a loud noise when properly lowered; however this hazard, previously unknown to me, should require strict warnings for its use, or the substitution of something safer. Ruth Ann Murphy, Ph.D. Chemistry Dept. Chairperson and Professor The University of Mary Hardin-Baylor 900 College Street Belton, TX 76513-2599 Phone (254) 295-4542 Fax (254) 295-4237