Those are excellent questions. The contractor that's in there right now, Kiewit, has the engineers and the experts who will know the success of the blasting. I did say before that my experience in the past has been that it takes up to three years, or sometimes even more, to remove an obstruction. I don't know in this particular case what it will take. We're hopeful that, not this month but perhaps in the next blasting period, we'll be successful. But Kiewit's going to have to assess that.
