Murchison and Hutton Fields Environmental Baseline Study April-May and September 1979 - Hydrocarbon and Heavy Metal Assessment Volume 1 Report on a detailed study following an earlier pre-operational environmental appraisal, undertaken in 1978, of the benthos in the environs of the Murchison field, to establish a baseline for studies of the effects of petroleum-derived hydrocarbons in marine biota. Report includes detailed text-based analysis illustrated by numerous data tables, diagrams and charts. c.1979