Work begins inside No.2 reactor building, NHK, June 22, 2011:
[...] Wastewater contaminated with nuclear material was 6.1 meters deep in the basement, with surface radiation levels between 388 and 430 millisieverts per hour.
Work on the second floor was scheduled to start on Thursday but was postponed because of the high radiation levels there.
Fukushima I Nuke Plant: Reactor 2 Radiation at 430 Millisieverts/Hr, EX-SKF, June 21, 2011:
[...] Note the water in the photos of the 1st floor. The color of the water is rust red. According to Asahi Shinbun, the depth of the water is 6.1 meters from the basement floor, about half way to the 1st floor. [...]
Published: June 22nd, 2011 at 9:55 am ET