JA Daily Science Report for Expedition 312, 20 November 2005


LOCATION: Site 1256


SCIENCE UPDATE: After washing and reaming to the bottom of Hole 1256D (1255 mbsf) the hole was cleaned with a 100 barrel mud sweep, the top drive was set back, and the drill string was pulled out of the hole. The bit cleared the cone at 0650 hr. The used tricone bit and bit sub was laid out and a new 9 7/8 RCB C-9 bit was made up. Hole 1256D was reentered for the third time at 1955 hr. The drill string began taking weight at 1161 mbsf, the top drive was picked up, and washing and reaming continued to the bottom of the hole.