conservation work is in itself historic. the last time something of this scale was undertaken was more than 60 years ago. when the letters were wooden, you could smoke a pipe while working, and protective headgear was a woolly hat. much has changed over the decades of the problems remain. abs, over the decades of the problems remain. a few years auo we problems remain. a few years ago we did problems remain. a few years ago we did do problems remain. a few years ago we did do a problems remain. a few years ago we did do a laser- problems remain. a few years ago we did do a laser scan - problems remain. a few years ago we did do a laser scan of. ago we did do a laser scan of every single stone so we ve got a very good record now of all the cracks and the holes, a lot of which are natural and geological, but also, one of these was stitched together in these was stitched together in the 1950s so we will be doing some repair work to that because at the time they used a mortar that wa