It would take the mother of all drill rigs to make something like a core drill possible. At present we do not have such. The weight to be lifted in that amount of drill stem, the amount of reserve mud you would need to balance and maintain pressure, and the amount of tanks and volume and pumps that would need to be on hand to keep balance would be tremoundous needs. I do not think at present core drill would be what we need. Another thing is that there is a good possibility once a core hole it made that it could be self perputaing and self enloarging, We really don;t know wnough yet to be sure.