We were disappointed today, as we discovered that a stiff rod joint separated again during milling. This is the same joint that broke before, and it was welded back together, but some of the strengh of this connection was lost when its threads were initially stripped. In an attempt to minimize stress on this joint, it was repositioned in the drill string to be 10 feet higher than last time. However, it was the weakest portion of the stiff pipe, and after about 15 hours of drilling, it gave way. The drillers are now tripping back into the hole to fish for the pipe and mill bit. Hopefully we will retrieve them sometime tomorrow.