Seven years have passed since the core meltdowns occurred in March 2011 at the Fukushima No. 1 nuclear power plant, which shocked the world and fractured the local community.

During a media tour last month, a hazard map of the crippled nuclear plant was shown to reporters. Colors on the map showed the dramatic progress being made in efforts to recover from the triple meltdown crisis over the past seven years.

According to the map, the plant's compound is mainly designated as "green" zones where workers can walk around only with light work clothes and a disposable mask to cover the mouth and nose.