The University at Buffalo today began assessing damage in Crosby Hall on the UB South (Main Street) Campus, where a steam-pipe accident Wednesday afternoon resulted in the death of a 25-year UB employee. Crosby Hall will be closed for classes and other activities at least through Sunday. Students, faculty and staff in the School of Architecture and Planning should call 829-3485 over the weekend for information on Crosby Hall's reopening. The employee who died in the accident has been identified by the university as David L. Shrader, 48, of Eden.