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Geodetic Reference System 2015 - the Approach in North ... - CLGE

Geodetic Reference System 2015 - the Approach in North ... - CLGE

NRW –

NRW – mining and ground movements Elevation ALDENRADE, church (Duisburg): 1921 29,41 7 cm/a 1935 28,42 27 cm/a 1953 26,06 36 cm/a 1964 22,00 17 cm/a 1968 21,30 18 cm/a 1974 18,64 11 cm/a 1982 17,76 1 cm/a 1990 17,62 < 1 cm/a black coal Ministry of the Interior and Local Affairs NRW, Germany underground mining (exhausted) collapse of overburden __________________________________________________________________________________________________________ The Geodetic Infrastructure in Europe – today and tomorrow - Sweden, Umeå 22-23 June 2011

Absolute ground movements in the Ruhr area ca. 1900 - 2010 vertical ground movements Ministry of the Interior and Local Affairs NRW, Germany > __________________________________________________________________________________________________________ (Harnischmacher) The Geodetic Infrastructure in Europe – today and tomorrow - Sweden, Umeå 22-23 June 2011 >

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