While both Thor and the Thing try to close the reactor core, Iron Man realizes that there's only ONE who can do the job. Iron Man, witnessing both heroes failing and dying from the radiation, tries to talk through the Hulk to Bruce Banner:
http://img235.imageshack.us/img235/9279/hr676jf.jpg
Thor and the Thing both struggle to seal the reactor core to no avail...
http://img485.imageshack.us/img485/4746/hr680be.jpg
The Thing falls. Thor is next...
http://img485.imageshack.us/img485/8043/hr698av.jpg
Iron Man, playing with fire, tries to slap some sense into the Hulk by trying to get to Banner with reason:
http://img485.imageshack.us/img485/8362/hr708kf.jpg
Iron Man succeeds in getting through to the Hulk and rescues Thor and the Thing while the Hulk does what he does best:
http://img357.imageshack.us/img357/729/hr710sr.jpg
http://img209.imageshack.us/img209/6255/hr727ds.jpg
http://img209.imageshack.us/img209/7893/hr737lf.jpg
http://img209.imageshack.us/img209/1356/hr747fh.jpg