This addendum is concerned with the numerical value of the secondary limits, the Annual Limit on Intake (ALI) and the Derived Air Concentration (DAC) for certain radionuclides. It takes into account data from the 1986 review of Publication 19, which was published as Publication 48. Publication 48 paid specific attention to information regarding absorption from the gastrointestinal tract and distribution between, and retention within, the skeleton and liver. Dosimetric data for the radionuclides are given in an appendix.