23/1-15

Position: 87° 13.4' N, 61° 38' W, temperature - 34° C, air pressure 1006 hPa, wind 10 knots from the NW. Ice drift 0.4 towards SE. The hydro hole had frozen up after not being used for 8 days. Had by now 0.5 m thick ice in the middle and the whole thickness along the sides. Mobilized the invented new hydraulic chain saw to make vertical cuts down-hole. This worked very well, but it still took most of the day to get the hole cleared.