In 1974, the Societal Institute of the Mathematical Sciences (SIMS) initiated.a sequence of five-day examine program meetings (RAC's) at Alta, Utah, for the aim of probing extensive societal fields in mild in their receptivity to mathematical and statistical research. the 1st 10 meetings addressed ecosys­ tems, epidemiology, power, environmental wellbeing and fitness, time sequence and ecological techniques, strength and healthiness, strength conversion and fluid mechanics, environ­ psychological epidemiology: danger evaluation, atomic bomb survivor facts: usage and research, and modem statistical tools in continual ailment epidemiology. those complaints are as a result the 11th convention of clinical concerns in Quantitative melanoma danger overview, which was once held in 1989 at Snowbird, Utah. for 5 days, forty five audio system and observers contributed their services within the suitable biology and statistics. The displays have been well timed and the dialogue was once either enlightening and now and then lively. This quantity expectantly provides a checklist that might be precious either now and sooner or later. Suresh H. Moolgavkar of the Fred Hutchinson melanoma study middle (Seattle, WA) and the collage of Washington (Seattle) chaired the convention. The convention was once supported by means of the next organisations: The Dow Chemical corporation Haskell Laboratory, E.1. duPont well-being and Welfare Canada overseas lifestyles Sciences Institute Monsanto corporation nationwide melanoma Institute Procter & Gamble Shell Oil corporation U. S. division of strength U.S. Environmental defense organisation U.S. foodstuff and Drug management SIMS is thankful to the above corporations for his or her aid of this convention. D.L. Thomsen, Jr.