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 , loading , unloading and un skilled work , silo extraction , packing and loading of cement into trucks including covering with tarpaulins and tying ( 1 to 5000 mt ) . , silo extraction , packing and loading of cement into trucks including covering with tarpaulins and tying 5001 to 12500 mt ) . , silo extraction , packing and loading of cement into trucks including covering with tarpaulins and tying ( 12501 mt & above ) . , stamping of week number on packing material/ 10 k number of bag , stamping of month on packing material/ 10 k number of bag , stamping of year on packing material / 10 k number of bag , stamping of price changes on packing material /10 k number of bag , stamping of crossing on packing material/ 10 k number of bag , stamping of others , if any / 10 k number of bag , unloading of new packing materials / 10 k number of bag , loading & unloading of equipments , stores and other components , unloading of other raw materials such as clinker / wet fly ash /slag etc , engagement of unskilled labour , stamping of week , month , year , price , crossing etc . , on bags with printing machine /10 k number of bag