Abstract: On August 9, 2001, an employee was on the second floor of a house demolishing a chimney. The removal operation was progressing from the floor to the ceiling with approximately 4 feet of brick and mortar removed before the accident occurred. The employee was taking out bricks, one at a time, from the chimney with a hammer, and cleaning each brick, when a large piece of brick and mortar measuring approximately 24 inches by 32 inches, and weighing around 1,200 lbs. came loose and hit the victim on his right upper torso. The victim was pinned under the large chimney piece and sustained a concussion. Two other employees were helping him, and they received minor cuts and bruises from smaller pieces of brick and mortar that hit them. The employee who was seriously injured was taken to a shock trauma unit in Baltimore, MD for treatment.