1.   He has already sacrificed part of his little toe on the right foot on a previous expedition.

2.   He hopes that tests being conducted tomorrow on small pieces of aluminum that Gillespie found on a previous expedition will set the stage for the new trip.

3.   In previous expeditions, the same team established that early sea-going Polynesians had the boats and navigational skills for purposeful exploration and widespread settlement of the Pacific.

4.   But last week, Norwegians from a previous expedition gave him directions to their supplies buried near the Pole nearly six years ago, the newspaper said.

5.   Previous expeditions found little radiation.

6.   Until now, ocean scientists believed they had seen all that seafloor vents had to offer in previous expeditions.