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Description:A report by the office of Management and Budget, dated July 1973, states that 29 federal agencies are dependent on the geodetic control furnished by the National Vertical Control Network. Due to vertical land movement, insufficient accuracy in earlier surveys and the loss of many bench marks approximately 80 percent of the existing network is not adequate for present needs. In Fiscal Year 1975, federal agencies submitted specific requests for over 28,000 kilometers of leveling to the chairman of the Federal Geodetic Control Committee.
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Content Notes:June 1975
Revised June 1976
Reprinted September 1978
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Rights Information:CC0 Public Domain
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Compliance:Library
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