for undertaking the contract work of silo extraction , packing and loading of cement into trucks , tarpaulin covering and tying and unloading / loading of raw materials , stores and spares etc . , shifting and stamping packing materials cgu , cherthala , description of work , silo extraction , packing and loading of cement into trucks including covering with tarpaulins and tying . , stamping of week no on packing material , stamping of month on packing material , stamping of year on packing material , stamping of price changes on packing material , stamping of crossing on packing material , stamping of others if any , unloading of new packing materials , unloading of other raw materials such as clinker / wet fly ash /slag etc , unloading of equipments , stores and other components