This report identifies U.S. locations where beryllium was used in workplace processes or detected as present in the workplace. Data show that beryllium was used or detected at locations in 45 of 50 states, plus the District of Columbia. However, the number of locations varied by state. For example, 30 states and the District of Columbia were reported as having from one to 10 locations, while 15 states were reported as having from 11 to 41 locations. The states without reported beryllium use were Alaska, Delaware, Minnesota, Vermont, and Wyoming.