From Yomiuri Shinbun (10/29/2011):
According to TEPCO, during the dismantling of the large crane [for Reactor 1 covering] at Fukushima I Nuclear Power Plant, wire (3.6 centimeters in diameter) fell from the crane and hit two workers at about 8:30AM on October 29.
A worker in his 40s broke bones at 5 locations including the chin and both legs, and was air-lifted to a hospital. A worker in his 20s has pain in his shoulder and stomach. TEPCO is investigating how the accident happened.
The 40-something worker broke his chin, both legs, rib cage, and right arm, according to independent journalist Ryuichi Kino, reporting on the TEPCO's press conference. (Some fear for his life, not trusting TEPCO.)
This is TEPCO's current understanding of the situation, from TEPCO's handout for the press (10/29/2011). TEPCO says it was 2.8-centimeter wire weighing 360 kilogram: