Abstract: Employees #3 and #4, of United Parcel Service, were unloading a trailer when they noticed two wet, leaking packages that appeared to be smoking. Employee #4 inhaled fumes while handling one of the packages and Employee #3 inhaled fumes when he entered the trailer. The packages were not labeled according to Department of Transportation regulations. Employees #3 and #4 took the packages out of the trailer and informed Employee #1, their supervisor, of the situation. Employee #1 put the packages in the spill bucket. He took the packages to Employee #2, whose job dealt with leaking packages (the packages are usually labeled). He took the packages outside while they were still smoking. He opened them and found that they contained two gallons of concentrated nitric acid. After identifying the contents, the employees followed spill procedure. Employees #1 through #4 were sent to the hospital to be checked.