The ENDF/B-IV fission-product data file includes data describing 824 nuclides. Cross sections, given for 181 of these nuclides, have been processed into 154 neutron energy groups. The production of the data file is described. The TOAFEW code, useful in collapsing the multigroup values to few-group cross sections, is presented with instructions and examples of its use. The file of multigroup cross sections is available on request. I. c^ in o in o in c* tn o in in in ^n in u^ in in fy ^ĵ CM cvj r j njt oooaoo oooc J UJ U} UJ UJ UJUJUJUJUJUJUJUJUJUJUJUJUJUJUJUJUJUlUJUJUJUJlxlUJUJUJUJUJUlUJUl J ^D C* ^^ *3 ^D O O C^ ^? C) ^^ ^D O ^5 O O-^3 C3 C3 CJ i3 3 3 ^} >3 ^3 C^7 O oooo oooooooooooooooooooooo-^oooooooo JOOOO OOOOOOOOOOOOOOOOOOOOOOCIOOOOOOOO JOOOO oooooooooooooooooooooocooooooom C\l f\l C\i roro ro m no m rnci zs ^ ^ ^ \f\ m in in tA I I 1 I • I lOOC'O'aoOiO'a'O crftn tntnininin-=rir»-^'-=S"-S'3 >-3'='"^'^T^'.=r-5i3 i ir^3'^"* w^f| nro OOOOOOOOOOOOOOOOOOOOOOOOOOOOOCiOOOOOOOO

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