The National Occupational Exposure Survey (NOES) was a nationwide observational survey conducted in a sample of nearly 5,000 establishments from 1981-1983. The goal of the NOES was to compile data on the types of potential exposure agents found at the workplace, & the kinds of safety & health programs which had been implemented was designed to represent those segments of American industry This volume describes the method used to select the sample of plants to be surveyed, & the estimation techniques used to project survey data to national estimates. Illustrations.