DTPA (diethylenetriaminepentaacetic acid) treatments were given to an employee who was exposed to plutonium via a contaminated nitric acid burn. The treatments were given promptly and repeated daily for 27 days. A total of 210,000 dpm of plutonium was eliminated in the urine in the first 60 days after the accident. This represents 96.5 per cent of the amount taken into the system assuming that the amount remaining is excreted according to the Langham equation. This case is similar to an exposure which occurred at Rocky Flats a year previously. In both cases, a sum of two exponentials expresses the daily plutonium excretion in the urine over the first 60 days.