China syndrome in Japan?

According to yahoo Japan's breaking news,
Japanease nuclear officials firstly and officially referred that the possibility of radioactive core fuel might melt through the bottom of core reactor on June 7th, 2011. Generally speaking, it is called 'China syndrome'.

http://headlines.yahoo.co.jp/hl?a=20110607-00000646-yom-sci

We can learn what is like about 'China Syndrome' from the following the site.


http://ecocentric.blogs.time.com/2011/05/16/was-fukushima-a-china-syndrome/

The melted radioactive materials in the core reactor completely fall down through the bottom of the nuclear power plant and then it permeated into the ground. It finally may go under without being cooled and reach on the opposite side of the earth.