JA Daily Science Report for Expedition 312, 03 December 2005


LOCATION: Site 1256


SCIENCE UPDATE: Hole 1256D was advanced 1.5 meters to 1372.8 mbsf but without recovery for Cores 199R and 200R. The drill string experienced high torque and while attempting to send the sinker bars down the pipe to retrieve the core barrel the pipe was briefly stuck. Nothing was recovered in the core barrel and high torque continued so the pipe was tripped. Upon retrieval of the bit it was discovered that all four cones were lost. A fishing BHA consisting of a Bowen 9.5 inch magnet and two junk baskets was run back into the hole, and we hope to resume coring soon.