§ Mr. Marlowasked the Secretary of State for Energy what proportion of the world's land surface and surveyable seabed outside the Warsaw pact countries has been surveyed for oil-bearing structures.
§ Mr. GrayMuch of the world's land surface as well as the seabed consists of formations where oil-bearing structures cannot exist. Of the sedimentary basins in which they could be found, approximately two-thirds of these have been surveyed, some extensively, others less so.