Levels of radioactivity in Wales from the accident at Chernobyl, USSR on 26 April 1986

This document contains a compilation of the results of environmental monitoring for radioactivity and radiation in Wales following the accident at Chernobyl, USSR, on 26 April 1986. The compilation has been prepared by the National Radiological Protection Board at the request of the Welsh Office and includes all information available to the NRPB up to 23 May 1986. Data are presented under the following headings: Background information, concentrations in air, water (rain, surface, tapwater, non-potable), grass, outdoor dose rates, concentrations in cows, goats and ewes' milk, concentrations in leafy vegetables and other foods. (U.K.)