In 1974 officials responsible for implementing Danish North Sea hydrocarbons policy – the Supervisory Authority within the Ministry of Commerce 1 – undertook a review of previous Danish concessionary commitments. Apparently they were unable to find any original assessment of the reservoir size, production characteristics, and the like for the Dan field – the only producing formation in Danish waters. A request was forwarded to the Danish Underground Consortium (DUC) for the original assessment – ‘such as it appeared to the concessionaires in connection with the planning of production in 1971’. 2 This request, in October 1974, occurred three years after the Danish Government had initially approved production plans for the Dan field. This episode is illustrative of the state of Danish North Sea policy at the time.