The primary purpose of the present study was to examine how prevalent were concerns about restarting Three Mile Island nuclear reactor Unit I among people within a five-mile radius of the plant four years after the accident involving reactor Unit II. Also explored were concerns related to expectations about the restart of Unit I, perception of control, and selected demographic variables. A stratified random sample of residents of 221 households was interviewed. These were chosen from over 4,000 households in Middletown, Pennsylvania. Recent arrivals in Middletown served as a control group. Of the residents surveyed, 60 percent or more expressed some concern about each of the questions and long-time residents were more concerned than those who moved in since the accident. Concern about radioactive emissions is greater now than before the accident and focuses on the possibility of future accidents, radiation exposure during the cleanup, and developing cancer or radiation disease. Those who were residents of Middletown at the time of the accident reflect less sense of personal control over important life events and more loss of faith in experts than do recent arrivals, suggesting the impact of the accident on the sense of personal control. People's position on whether or not to restart Unit I focused more on health hazards than on political ideology about nuclear power. Slightly over half felt that it should not be restarted, a drop from two-thirds reported in 1982. (IS)