Mr. Dennis Keeley:

I do not have the full answer to that. There are questions around the performance of the products. That is a healthy position where we are constantly learning. These are relatively new methods. It is right that we question them. I am sure the Department is questioning them. There are some concerns around second burn of columns where charring occurs on a portion of it, it falls away and it opens it up for second burning. We are aware of those issues but I cannot answer as to how and where it is at from the Department's perspective.