 The issue about how much gas is there came up a number of times, not the least of which was ten years ago the president of the university asked me how much gas was in the Marcellus. And I gave a very huge number which of course was sensational at that time and brought the industry to the state of Pennsylvania. Over a period of ten years we've demonstrated by drilling and production that the state has not been disappointed by the predictions of gas production from ten years ago. And right now as much as anything the issue appears to be how long these wells will last and generally the rule of thumb right now is that anyone can go to the department of environmental protection production reports and look up a particular well and if they want to know how much gas that well will produce in all what they can do is look at the production over the first five years and we say that the total production of the well one half of the gas will be produced in the first five years. Now the other half of the gas will probably be produced over a much longer period of time. It could extend out as much as thirty years.