are higher by 2 to 3 orders of magnitude in Area 13 cattle than for cattle grazed in a control area. Based on limited data, muscle values from the cattle grazing the highest concentration area were possibly elevated about one order of magnitude above the control cattle for that As more data become available, these values will become more tissue. And, as more data are available, it is clear that adjustments definite. in Martin and Bloom's model are becoming essential to reflect actual ecosystem component measurements vs theoretical values. Gilbert and Eberhardt, using data provided by Smith, Bradley, Fowler, and Romney, discuss some aspects of meaningful interpretations of actual field data, including skewed data sets and bias problems. Bliss and Jakobowski, in reporting further data on distribution of plutonium around the NIS, indicate that there has been no recent signifi- cant change in plutonium in soil data. Duplicate sampling for air concentrations of plutonium has begun as a study to estimate the total error associated with the sampling and analysis of air samples. Three drainage basins near the Nevada Test Site are being monitored for signs of any definable movement or concentration of plutonium. Preliminary observations are negative. Analysis is also under way of vegetables and fruits collected from areas surrounding NTS. Future plans include measurements of off-site plutonium resuspension, mounds under shrubs, Study of soil collection errors (pertaining to sample locations, size, etc.), and definition of 137cg distribution off-NTS. The support services section of this publication includes reports from those contractor personnel responsible for making it possible for the field-conducted experiments to take place. Not only does NAEG depend heavily on these people to surmount huge problems in logistics and data base operations (Reynolds Electrical & Engineering Co., Inc.), literature search (Oak Ridge National Laboratory), and analysis, but also for development of techniques, methods, and future guidance on potential field or laboratory problems, advance literature needs, and availability of new radiochemical and statistical analysis procedures or tools. The reports include special reports by Lee, Major, and Wessman; by Major and Leventhal, LFE Environmental Analysis Laboratories, on radiochemical services to NAEG, and tissue analysis for transuranic elements. A report by Pfuderer of the Nevada Applied Ecology Information Center at ORNL on activities of that group reflects only a small portion of the in-depth background of this important service to the Nevada Applied Ecology Group. Recent innovations have included a special abstract report service to NAEG personnel on the most recent publications of interest, as they appear in the ORNL Environmental Sciences Information System. The massive data bases available at the ORNL Ecological Sciences Information Center in the area of radioecology are listed in Table 2 of Pfuderer's paper. Reynolds Electrical & Engineering Co., Inc., provides NAEG scheduling and coordination, logistical support, rad-health services, data base processing, programming, and computer services, sample collection, preparation, handling, and laboratory analysis. Reports on the varied 321