Emissions of dioxins from steel mills melting scrap iron are well known and have been measured in a lot of industries. When looking closer at the production process, it seems obvious that the dioxins, before they are emitted to the outdoor environment, at least to some extent pass the work environment. With this in mind, we examined the concentrations of dioxins in the work environment. Measurements were made in four steel mills, two of which had undertaken control measures to evacuate the flue dust from the electric arc furnace and the work environment around it. In each of the steel mills, three 8-hour samples were collected. The samples in each company were taken 1) close to the electric arc furnace, 2) on the same level as the overhead crane and 3) in the cabin of the overhead crane. This measuring strategy was chosen to show the concentrations where the workers usually are working, close to the furnace, and how high the dioxin concentrations might be in the most exposed place, at the overhead crane level. The concentration in the cabin is especially important, as the overhead crane driver is the only person working continously high up in the steel mill, were the concentration is expected to be the highest. The cabins were supplied with air from the furnace hall. The supply air was filtered in a dust filter. The results showed that the dioxin levels ranked highest at the overhead crane level and were somewhat lower in the cabins. Approximately 50–75% of the dioxins were trapped in the filter. In general the concentrations were lower at the furnace level. From our results we estimated the daily intake of dioxins to be 5 – 10% of the maximum limit of the ADI, 35 pg/kg, week. This, however, is somewhat uncertain. E.g the absorption of dioxins from inhalation, is assumed to be 100%, which might be an overestimate. Analyses of dioxins in blood are to be made.