The object of the publication is to make available selected reports that were not included in the summary report, 'Proposed Guidance on Dose Limits for Persons Exposed to Transuranium Elements in the General Environment' (PB-290 314). These reports contain additional material on the transuranium elements with respect to movement through environmental pathways leading to the exposure of individuals. Also included are sections on dosimetry models, potential biological effects following inhalation and ingestion, environmental sampling and radiochemical procedures, and the technology and costs for cleaning up contaminated land areas.