the meltdown at the puck fukushima daichi power plant. was concern about the workers at the plant, the radiation levels they were being exposed to and whether tokyo electric power company was being forthright about the dangers the workers were actually facing. a year later, radiation is still leaking, there's still cleanup work being done at the plant, but not by nuclear engineers. to find out who the workers are and buy they're risking their health, a writer went under cover. >> reporter: inside a nuclear disaster, these are the nameless men tasked with cleaning up the crippled fukushima nuclear plant. nearly this was the site of a triple meltdown, a force so powerful, radiation still leaks today. a 12-mile radius around the plant is a nuclear waste land, and these men work around the clock, trying to contain the nuclear fuel. this author wanted to know more about these men who risk their lives for so little in return. so he disguised himself as a fellow contract laborer. he's looking into a small video camera. disguised as a wristwatch.

the meltdown at the puck fukushima daichi power plant. was concern about the workers at the plant, the radiation levels they were being exposed to and whether tokyo electric power company was being forthright about the dangers the workers were actually facing. a year later, radiation is still leaking, there's still cleanup work being done at the plant, but not by nuclear engineers. to find out who the workers are and buy they're risking their health, a writer went under cover. >> reporter: inside a nuclear disaster, these are the nameless men tasked with cleaning up the crippled fukushima nuclear plant. nearly this was the site of a triple meltdown, a force so powerful, radiation still leaks today. a 12-mile radius around the plant is a nuclear waste land, and these men work around the clock, trying to contain the nuclear fuel. this author wanted to know more about these men who risk their lives for so little in return. so he disguised himself as a fellow contract laborer. he's looking into a small video camera. disguised as a wristwatch.