>> smith: bob orr in washington tonight. thanks very much. don blankenship is the chairman and c.e.o. of massey energy, the owner of the upper big branch mine and he joins us live near evening. thank you for taking the time to speak with us. >> thank you for having me. >> smith: it's pretty well known now in the last 24 hours your company has been cited numerous times for ventilation violations. could it be that just that kind of violation may be at root of the explosion that took place here yesterday? >> well, i think it's possible that anything could be the source of the fire or th...