Custom Bid for Services- Transportation of Fly Ash from Dry Fly Ash storage Silo of NTPC Korba to Ash brick manufacturing units, Custom Bid for Services- Transportation of Cement by mechanical transport including loading unloading etc complete from NTPCs cement store to each brick manufacturing plant site, Custom Bid for Services- upplying and Transportation of coarse sand by mechanical transport to each fly ash brick manufacturing unit including loading unloading complete as per instruction of EIC