TheSecondInternationalConfe-renceonRareEarthDevelopmentandApplications(ICRE’91)washeldwithgreatsuccessinBei-jingMay27-31,1991.CREI’seditorshadthepleasuretoat-tendtheconference.Hereintro-ducedaresomepapersfromtheConferenceProceedingswhichwefoundrepresentativeindifferentRE-relatedfields.