4 reporters including those from Yomiuri Shinbun and NHK (I read the names off TEPCO's video) went up to the operation floor of the Reactor 4 building with Minister Goshi Hosono as part of the third press tour of Fukushima I Nuclear Power Plant on May 26, 2012.
TEPCO released 5 videos of the top floor, mostly focusing on Hosono.
It looks the heavy equipment, probably for removing the debris, is sitting on top of the platform over the Reactor Well.
Nice view of the ocean on a sunny day.
NHK has the video showing the inside of the reactor building, as reporters and officials and TEPCO workers climbed up the narrow steep stairways to the top floor.
Screenshots from the NHK video:
Asahi Shinbun has an aerial photo of the Reactor 4 building from the helicopter on May 26. It shows the location of the Spent Fuel Pool (area covered with white plastic sheet). The building to the right is the turbine building, and the Pacific Ocean is beyond the turbine building (not seen in the photo):
No question the building is in bad shape, but at least they (human workers) can work on this building, as they have been doing since last year. The worker who tweets from Fuku-I sounded rather proud when he tweeted about the TV coverage of the Reactor 4 operation floor. He said, "Finally people get to see what I've been working on all along."
Still, the radiation level on the operation floor was 330 microsieverts/hour according to Kyodo News. Hosono and the reporters stayed there for about 30 minutes. In other reactors, the radiation levels are measured in millisievert. The reporters who participated in the tour got between 60 to 90 microsieverts of external radiation exposure for the 4 and a half hour tour, says Kyodo News.