supply of clean silica sand, free from clay, loams, mica and other foreign material, as per specification no. aar m-916-51 to bclean silica sand, free from clay, loams, mica and other foreign material, as per specification no. aar m-916-51 to b,clean silica sand, free from clay, loams, mica and other foreign material, as per specific ation no. aar m-916-51 to be used on all classes of diesel and electric locomotive packing in 30 kgs w ater proof polythene bags as per rdso letter no. sd.dfm.a.8 dated 28/29.12.2011 and 09/10.09.2013 [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] => limited