Ordnance Survey retriangulation history
Ordnance Survey retriangulation of Great Britain
The bulk of the hill and mountain-top work took place in the 1950s and 1960s.
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Ben Nevis, Ordnance Survey retriangulation of GB, October 1960
"Another wasted day". Ritchie Gallagher, surveyor, on summit of Ben Nevis
19601960sBen NevisDate certainGeoaccuracy very goodKodachromeNN1671OctoberOrdnance SurveyOutsideScotlandTavistockcairncolourcolour photoemployeeshistorymanmap makingmountainphoto printretriangulationshelterslidesnowstaffsummitsurname GallaghersurveysurveyingsurveyortriangulationtrigBroadley35
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