§ Mr. Sharpasked the Minister of Agriculture what progress has been made by the Ordnance Survey Department on the re-survey of built-up areas in the West Riding of Yorkshire; and when it is estimated that 1/1250 and 1/2500 scale maps will be available.
Mr. T. WilliamsAbout one-eighth of the field survey strength of the Ordnance Survey is employed on the re-survey of built-up areas in the West Riding. Work is proceeding in Sheffield, Pontefract, Castleford and Leeds; and other towns will be taken up as soon as possible. A few 1/1250 and 1/2500 plans of the resurveyed built-up areas should be available about mid-1950; and it is hoped that most of those for the urban areas of the West Riding will be published by 1960. The programme for the 1/2500 re-survey of rural areas has not been decided, but it will not start in the West Riding before 1952. It is hoped to complete the whole country by 1980.
§ Mr. Sharpasked the Minister of Agriculture what progress has been made in carrying out the post-war ordnance survey programme.
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Mr. T. WilliamsThe short-term publication programme of the Ordnance Survey, which includes the rapid publication of maps and plans in provisional form incorporating the National Grid, is complete in so far as maps on the ¼ inch and inch scales are concerned. About 60 per cent. of the sheets of the provisional 6 inch and 1/25,000 series have also been published.
Under the Department's long-term programme, re-survey of built-up areas at a scale of 1/1250 is proceeding in 66 towns. In four of these the work is complete or nearing completion, and in 25 others it should be finished within 18 months. Publication of the resulting plans follows the field work as closely as possible. The re-triangulation of Great Britain is nearly two-thirds completed, and substantial progress has been made in re-establishing levelling data which was lost by enemy action during the war.
On the whole, rather less than 5 per cent. of the Department's long-term programme has been completed.