Tenders for Supply of Silica Sand Dry Filtered & Packed In 10 Kgs. Waterproof And Polythene Bags As Per Specification M.9 16-51 Adopted 1950 Revised 1983/1994, Car Locomotive Sand As Per Rdso Letter No- S.D.Dfm.A.8 Date 28.12.1 1 . Warranty Period: 30 Months After The Date Of Delivery