The following is from a 27 June 2012 news item by the World Trade Organization.
On 27 June 2012, the United States, the European Union and Japan requested a special meeting of the Dispute Settlement Body (DSB) to be held on 10 July 2012 to consider their requests for panels to examine China’s exports measures on rare earths (DS431, DS432 & DS433).
This item is available in its entirety at:
http://www.wto.org/english/news_e/news12_e/disp_27jun12_e.htm