Well I've created the mine reference, but the Google Earth map now shows the location pin to be way off where I set it - the 'Bird's Eye' view used for setting location is very inaccurate, and doesn't seem to have a modern photo embedded, as you can actually see the shaft in the Google Earth view - but that wasn't available for setting-up. Is there any way the grid ref can be updated now the mine has been created so the pin can actually sit on the mine?