I don't think its going to be that easy. In the summer program they were cementing the holes after they finished drilling them. They do this to prevent water contamination and potential flooding down the line if they mine it. I suspect that they would do this for all holes. So to 'deepen' these 'missed holes' they are more likely to set up beside them and redrill. That's why I was previously wondering if 09-31, which look to located right beside 09-11 on the map is their depth extension of 09-11.
Food for thought.
.... Rob