supply of clean silica sand free from clay loams, mica & other foreign materialclean silica sand free from clay loams, mica & other foreign material,supply of clean silica sand free from clay loams, mica & other foreign material as per rdso specif ication no. aar m-916-51 or latest, to be used on all classes of ac/dsl locomotives packing in 30 kg water pr oof bags as per rdso letter no. sd.dfm.a.8 dated 28/29.12.2011 for two years (400mt for one year total 800 mt). payment should be done as basic rate with packing and fright charge per unit including gst inspected by rites. ] traction foreman (running) gujarat 800.00 mt